WW2 List of Operations of World War II
| Name | Description |
| Operation 25 | 1941 - German invasion of Yugoslavia [Read More] |
| Operation 505 | 1943 - German anti-partisan operation in Tuzla, Bosnia, Yugoslavia |
| Operation A-Bewegung | 1939 - German preparation for the invasion of Poland; part of Fall Weiss |
| Operation A-Go | 1944 - Japanese attack of the American fleet off Saipan, Mariana Islands [Read More] |
| Operation Aberlour | 1944 - Allied attack on Galmanche, France; part of Operation Overlord [Read More] |
| Operation Accolade | 1943 - British attack on the Dodecanese Islands, Greece [Read More] |
| Operation Accumulator | 1944 - Diversionary Allied naval operation near the Channel Islands before the start of Operation Overlord; part of Operation Neptune [Read More] |
| Fall Achse | 1943 - German response to Italian surrender to the Allies [Read More] |
| Operation Adler | 1940 - German attacks on the British Royal Air Force, aimed to soften defenses for a future ground invasion; also known as Operation Adlerangriff [Read More] |
| Operation Adler | 1942 - German anti-partisan operation in Chechivichi region of Belorussia |
| Operation Adler | 1943 - Axis anti-partisan operation on the north Dalmatian coast in Yugoslavia, with focus in the cities of Rijeka, Karlobag, and Zadar |
| Operation Adlerangriff | 1940 - German attacks on the British Royal Air Force, aimed to soften defenses for a future ground invasion; also known as Operation Adler [Read More] |
| Operation Agreement | 1942 - British and Commonwealth attacks against targets in Libya |
| Operation Aida | 1942 - Axis attacks in Egypt and Libya with aim on Tobruk, Libya |
| Operation Aktion 24 | 1945 - Aborted German suicide aerial attack on bridges over river Weichsel in attempt to disrupt Soviet supply lines |
| Operation AL | 1942 - Japanese invasion of the Aleutian Islands, Alaska, United States |
| Operation Alacrity | 1943 - Allied naval patrols near the Azores |
| Operation Alba | 1942 - Axis anti-partisan operation in the Independent State of Croatia; also known as Operation Albia and Operation Albija |
| Operation Albia | 1942 - Axis anti-partisan operation in the Independent State of Croatia; also known as Operation Alba and Operation Albija |
| Operation Albija | 1942 - Axis anti-partisan operation in the Independent State of Croatia; also known as Operation Alba and Operation Albia |
| Operation Alfa | 1942 - Axis anti-partisan operation in Yugoslavia |
| Operation Alfred | 1940 - German mining off Dover, England, Britain using surface vessels |
| Operation Alpenfestung | 1945 - German plan for a redoubt in the German Alps |
| Operation Alpenveilchen | 1941 - Aborted German intervention during the Italian invasion of Albania |
| Operation Alpha | 1944 - Allied build-up of defenses at Kunming, China |
| Operation Alphabet | 1940 - British evacuation from Norway [Read More] |
| Operation Alsos | 1940-1945 - Allied nuclear fission research |
| Operation Altenbeken | 1940 - German attack on Adalsnes, Norway; part of Operation Weserübung [Read More] |
| Operation Altona | 1940 - German attack on Arendal, Norway; part of Operation Weserübung [Read More] |
| Operation Ambassador | 1940 - German commando raid on British crown dependency Bailiwick of Guernsey off the French coast |
| Operation Amherst | 1945 - Free French airborne attack in the Netherlands to capture canals, bridges, and airfields, sponsored by the British Special Air Service (SAS) |
| Operation Amina | 1941 - Failed German attempt to destroy oil refineries in Abadan, Iran |
| Operation Anklet | 1941 - British raid on German positions at Lofoten Islands, Norway |
| Operation Anthropoid | 1942 - British Special Operations Executive (SOE) assassination of Reinhard Heydrich |
| Operation Antimon | 1944 - German operations in Romania |
| Fall Anton | 1942 - German occuppation of Vichy France after Italian support in 1942 |
| Operation Anvil | 1944 - Allied invasion of Southern France; later changed to Operation Dragoon [Read More] |
| Operation Aphrodite | 1944 - American research on remote-controlling B-17 bombers |
| Operation Arashi | 1945 - Japanese air raid on Ulithi, Caroline Islands |
| Operation Archery | 1941 - British commando raid on Vågsøy, Norway |
| Operation Archway | 1945 - British Special Air Service (SAS) operation |
| Operation Ariel | 1940 - Allied retreat from France using ports between Cherbourg and the Spanish border |
| Operation Arnim | 1943 - German anti-partisan operation in the Fruška gora Mountains in Syrmia in the Independent State of Croatia |
| Operation Arras | 1944 - Axis anti-partisan operation in the Lipik-Novska-Okucani region in the Independent State of Croatia |
| Operation Artus | 1941 - Irish Republican Army plan to coordinate IRA and German intelligence operations; also known as Plan Kathleen |
| Operation Aster | 1944 - German evacuation of Estonia |
| Operation Astonia | 1944 - Allied attack on Le Havre, France; part of Operation Overlord [Read More] |
| Operation Astrologer | 1941 - British convoy to Malta [Read More] |
| Operation Atlantic | 1944 - Canadian attack on Caen, France in support of Operation Goodwood [Read More] |
| Operation Attacke | 1943 - German minelaying operation north of Corsica, France |
| Operation Attika | 1942 - German attack on Tuapse, Russia in the Caucasus region |
| Operation Attila | 1940-1942 - German occuppation of Vichy France prior to Italian support in 1942 |
| Operation Aufbau Ost | 1940 - German preparations for Operation Barbarossa [Read More] |
| Operation August Storm | 1945 - Russian invasion of Manchuria, China and Korea [Read More] |
| Operation Ausladung | 1943 - German offensive near Tunis, Tunisia in conjunction with Operation Ochsenkopf |
| Operation Avalanche | 1943 - Allied landing at Salerno, Italy [Read More] |
| Operation B | 1940 - German attack on the Maginot Line on the German-French border; part of Fall Rot [Read More] |
| Operation B | 1941 - Japanese invasion of Sarawak, Borneo [Read More] |
| Operation B | 1942 - Japanese invasion of Burma [Read More] |
| Operation Backfire | 1945 - British test launches of captured German V-2 rockets |
| Operation Bagration | 1944 - Soviet offensive in Belorussia |
| Operation Balsam | 1945 - British photographic reconnaissance of southern Malaya and airstrikes against Sumatran airfields |
| Operation Bamberg | 1942 - German anti-partisan operation in Bobruisk, Belorussia in conjunction with Operation München I |
| Operation Ban-Go | 1944 - Japanese defensive operation at the Irrawaddy River in Burma |
| Operation Baobab | 1944 - British Special Air Service (SAS) operation to destroy a rail bridge between Pesaro and Fano, Italy; part of Operation Shingle |
| Operation Barbarossa | 1941 - German invasion of the Soviet Union [Read More] |
| Operation Basalt | 1942 - British commando raid on German-occupied Sark, Bailiwick of Guernsey, Britain |
| Operation Battleaxe | 1941 - British and Commonwealth attack in North Africa in attempt to relieve Tobruk, Libya |
| Operation Baytown | 1944 - Allied diversionry landings near the tip of Calabria, Italy; part of Operation Avalanche [Read More] |
| Operation Beethoven | 1941-1945 - German program to develop composite aircraft |
| Operation Begonia | 1943 - British airborne rescue operation for POWs in Italy, in conjunction with Operation Jonquil |
| Operation Beowulf I | 1941 - Planned German offensive of the Baltic States |
| Operation Beowulf II | 1941 - German offensive of the Baltic States |
| Operation Bergwiese | 1944 - Axis anti-partisan operation on the Primošten Peninsula in the Independent State of Croatia |
| Operation Bergwind | 1945 - Axis anti-partisan operation at the Moslavacka Mountains southeast of Zagreb in the Independent State of Croatia |
| Operation Berlin | 1941 - German commerce raid in the Atlantic Ocean performed by Scharnhorst and Gneisenau |
| Operation Berlin | 1944 - Allied withdrawal after failure of Operation Market Garden [Read More] |
| Operation Bernhard | 1940 - German mining off Dover, England, Britain |
| Operation Bernhard | 1941 - German plan to destablize British economy with counterfeit British banknotes |
| Operation Berta | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Bertram | 1942 - British deceptive operation for Operation Lightfoot |
| Operation Beta | 1942 - Axis anti-partisan operation in Yugoslavia |
| Operation Bettelstab | 1942 - Planned German offensive at Leningrad, Russia |
| Operation Biene | 1940 - German attack on Alsten Island and Sandnessjøen, Norway; part of Operation Weserübung |
| Operation Bienenhaus | 1944 - Axis anti-partisan operation in the Moslavacka Mountains in the Independent State of Croatia |
| Operation Big | 1945 - Allied capture of the atomic pile at Haigerloch, Germany |
| Operation Bilo gora | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Bilo gora Ost | 1943 - Axis anti-partisan operation in the Bilo gora Mountains in the Independent State of Croatia |
| Operation Birke | 1944 - German plan to withdraw from northern Finland prior to the Lapland War |
| Operation Birkhahn | 1945 - German evacuation of Norway |
| Operation Bishop | 1945 - British naval operation to provide cover for Operation Dracula |
| Operation Biting | 1942 - British commando raid at Bruneval, France to capture a German Würzburg radar set |
| Operation Blackcock | 1945 - British attack on the towns of the Roer (Rur) Triangle (Roermond, Sittard, and Heinsberg) in the Netherlands |
| Operation Blackstone | 1942 - American attack on Safi, Morocco; part of Operation Torch [Read More] |
| Fall Blau | 1935 - German defense planning on the eastern border, in tandem with Fall Rot |
| Fall Blau | 1938 - German air force research; later renamed Planstudie 39 |
| Fall Blau | 1942 - German attack against Voronezh, Russia |
| Operation Blaufuchs 1 | 1941 - Staging of German forces from Germany to northern Finland, part of Operation Silberfuchs [Read More] |
| Operation Blaufuchs 2 | 1941 - Staging of German forces from Norway to northern Finland, part of Operation Silberfuchs [Read More] |
| Operation Blei | 1944 - German operations in Romania |
| Operation Blitz | 1944 - Axis anti-partisan operation in the Našice-Ðakovo region of Slovenia, Yugoslavia |
| Operation Blitzableiter | 1939-1945 - German bacteriological weapons research |
| Operation Blockbuster | 1945 - Canadian advance toward the Rhine River |
| Operation Bluecoat | 1944 - Allied attack on River Vire, France; part of Operation Overlord |
| Fall Blume I | 1944 - German defense plan in case of an Allied invasion of Northern France [Read More] |
| Fall Blume II | 1944 - German defense plan in case of an Allied invasion of Southern France [Read More] |
| Operation Blücher | 1942 - German attack on the Strait of Kerch and Rshev, Russia in the Caucasus region; part of Fall Blau |
| Operation Blücher II | 1942 - German attack on the Strait of Kerch in the Caucasus region in Southern Russia; part of Fall Blau |
| Operation Boarding Party | 1943 - British raid against German ships interned in neutral Portuguese port of Goa, India |
| Operation Boardman | 1944 - Allied deceptive operation to create false threat of invasion in Balkans; part of Operation Avalanche [Read More] |
| Operation Bodden | 1937-1943 - German Abwehr intelligence gathering system in Spain and Morocco |
| Operation Bodenplatte | 1945 - German air raid against Allied airbases in the Netherlands and Belgium in support of Wacht am Rhein |
| Operation Bodyguard | 1944 - Diversionary Allied attack in support of Operation Overlord |
| Operation Bogdanow | 1941 - German construction operation to build rail bridges between Lida and Molochtschno in Belorussia |
| Operation Bolero | 1942 - The build-up of American forces and supplies for Operation Roundup |
| Operation Bolero | 1943-1944 - The build-up of American forces and supplies for Operation Overlord [Read More] |
| Operation Bowery | 1942 - Allied delivery of Spitfire fighters to Malta [Read More] |
| Operation Brandfackel | 1944 - Axis anti-partisan operation in the Kozara Mountains in the Independent State of Croatia |
| Operation Brandung | 1941 - Axis attack toward El Alamein, Egypt |
| Fall Braun | 1940 - German attacks against the Maginot Line on the French-German border in conjunction with Fall Grün [Read More] |
| Operation Braun | 1942 - German build-up of defenses in Tunis, Tunisia in response to Allied Operation Torch |
| Operation Braun | 1943 - German anti-partisan operation in Yugoslavia |
| Operation Braunschweig | 1942 - German attack toward Stalingrad and the general Caucasus region in Southern Russia; part of Fall Blau [Read More] |
| Operation Braunschweig | 1944 - German anti-partisan operation in the Istria Peninsula, Yugoslavia |
| Operation Bravado | 1944 - Allied mine-laying operation around the Kiel Canal to prevent German naval reaction; part of Operation Neptune |
| Operation Brawn | 1944 - Canceled British carrier attack on German battleship Tirpitz |
| Operation Bremen | 1940 - German attack in Norway; part of Operation Weserübung [Read More] |
| Operation Brevity | 1941 - British attack on Halfaya Pass on the border of Libya and Egypt |
| Operation Brunhild | 1943 - Planned German evacuation from the Caucasus region in Southern Russia |
| Operation Brushwood | 1942 - American attack on Fedala, Morocco; part of Operation Torch [Read More] |
| Operation Brückenschlag | 1942 - German attempt to break the Russian envelopment of German troops in Demyansk, south of Leningrad, Russia |
| Operation Burdock | 1943 - German anti-partisan operation in Russia |
| Operation Burza | 1944 - Polish local uprisings organized by the Polish Home Army |
| Operation Bussard | 1942 - German offensive in the Caucasus region of Southern Russia |
| Operation Büffel | 1940 - German air operation to relieve troops in Narvik, Norway |
| Operation Büffel-Bewegung | 1943 - German evacuation of Rshev, Russia |
| Operation C | 1942 - Japanese reconnaissance and raid operations in the Indian Ocean [Read More] |
| Operation Caesar | 1945 - Failed transfer of technical plans and strategic materials from Germany to Japan, using submarine U-864 |
| Operation Calendar | 1942 - Allied delivery of Spitfire fighters to Malta [Read More] |
| Operation Candytuft | 1943 - British Special Air Service (SAS) operation against the rail bridge between Pesaro and Fano, Italy |
| Operation Cannae | 1943 - German occupation of Zagreb, Sisak, and Bjelovar in Yugoslavia |
| Operation Cannae | 1944 - Axis anti-partisan operation in the area between the Sava and Drava Rivers in the Independent State of Croatia |
| Operation Canned | 1940 - British naval bombardment of Banda Alula, Italian Somaliland |
| Operation Canned | 1944 - British search and destroy operation for German supply tanker |
| Operation Canter | 1943 - Preliminary assault on forward Mareth Line positions |
| Operation Canuck | 1945 - British Special Air Service (SAS) operation near Turin, Italy to train and organize Italian resistance fighters |
| Operation Capital | 1943 - Allied invasion of northern Burma |
| Operation Capri | 1942 - Axis counterattack at Medenine, Tunisia |
| Operation Cardaci | 1943 - Axis anti-partisan operation near Cardaci in the Independent State of Croatia |
| Operation Carpetbagger | 1943 - American paradrop to supply anti-German resistant groups |
| Operation Carthage | 1945 - British Royal Air Force bombing of the Gestapo headquarters in Copenhagen, Denmark |
| Operation Cartwheel | 1943 - Allied attacks against Japanese targets in the Southwest Pacific Ocean |
| Operation Casanova | 1944 - Axis anti-partisan operation in the Independent State of Croatia utilizing German aircraft to deceive partisan fighters |
| Operation Castigo | 1941 - German aerial bombing of Belgrade, Yugoslavia |
| Operation Catapult | 1940 - British Royal Navy operation to seize, disable, or destroy the French fleet |
| Operation Catchpole | 1944 - American invasion of Eniwetok, Marshall Islands; part of Operation Flintlock |
| Operation Catechism | 1944 - British RAF attack on German battleship Tirpitz |
| Operation Catherine | 1939 - British plan to gain control of Baltic Sea |
| Operation Chariot | 1942 - British commando raid on the German docks at St. Nazaire, Normandy, France |
| Operation Charmwood | 1944 - Allied attack on Caen, France; part of Operation Overlord |
| Operation Chastise | 1943 - British bombing of Ruhr dams [Read More] |
| Operation Chastity | 1944 - Canceled Allied plan to build artificial harbors at Quiberon Bay, Brittany, France |
| Operation Chestnut | 1943 - British Special Air Service (SAS) raid in Sicily, Italy; part of Operation Husky |
| Operation Chettyford | 1944 - Allied deceptive operation to hint a false invasion of the Balkans before the start of Operation Shingle |
| Operation Christrose | 1944 - Early name for Wacht am Rhein [Read More] |
| Operation Chronicle | 1943 - Allied landings at Woodlark and Kiriwina Islands off New Guinea in support of Operation Cartwheel [Read More] |
| Operation Clausewitz | 1942 - Second phase of the German summer offensive in the Caucasus region of Southern Russia |
| Operation Clawhammer | 1942 - Planned British commando raid on a radar site near Cherbourg, France |
| Operation Claymore | 1941 - British raid on Lofoten Islands, Norway |
| Operation Cleanslate | 1943 - American landings on the Russell Islands, Solomon Islands [Read More] |
| Operation Clipper | 1944 - Allied attack on the German Siegfried Line at Geilenkirchen, North Rhine-Westphalia, Germany |
| Operation Coat | 1940 - British Admiralty codeword given to the passage of a reinforcement force from Force H, consisting of the Battleship Barham, the cruisers Berwick and Glasgow and three destroyers, based at one end of the Mediterranean, to the Mediterranean Fleet at the other end. The force was late and only arrived one day before the already planned attack on Taranto. |
| Operation Cobra | 1944 - American breakout of the Normandy beachhead that laid foundations for the Falaise Pocket; part of Operation Overlord [Read More] |
| Operation Cockpit | 1944 - Allied naval airstrike on Sabang, Sumatra [Read More] |
| Operation Cold Comfort | 1945 - Failed British Special Air Service (SAS) operation to block the railway through Brenner Pass on the Italy-Austria border; alternative name of Operation Zombie |
| Operation Collar | 1940 - Brtiish convoy from Gibraltar to Malta and then to Egypt [Read More] |
| Operation Colossus | 1941 - British airborne raid in Calitri, Italy |
| Operation Comet | 1944 - Planned Allied airborne attack in the Netherlands; replaced by Operation Market Garden [Read More] |
| Operation Compass | 1940 - British and Commonwealth counteroffensive in Libya and Egypt |
| Operation Concertina | 1943 - Planned British invasion of Alderney in the English Channel |
| Operation Condor | 1943 - Planned British invasion of Jersey in the English Channel |
| Operation Constellation | 1943 - Planned British invasion of German-occupied Channel Islands |
| Operation Cooney | 1944 - French commando operation sponsored by British Special Air Service (SAS) to destroy German railroad targets in Brittany, France; part of Operation Overlord |
| Operation Corkscrew | 1943 - British invasion of Pantellaria, Italy [Read More] |
| Operation Cornflakes | 1945 - American plan to insert propaganda into the German mail system |
| Operation Corona | 1943 - British Royal Air Force actions to deceive German air defenses |
| Operation Coronet | 1945 - Planned American invasion of Japanese home islands; part of Operation Downfall [Read More] |
| Operation Cottage | 1943 - Allied attack of Kiska, Aleutian Islands, Alaska, United States [Read More] |
| Operation Cottbus | 1942 - German anti-partisan operation in Polotsk, Lepel, and Borisov in Belorussia |
| Operation Coullie | 1945 - British air attacks against the Nicobar Islands and air cover for minesweeping forces near Phuket Island |
| Operation Countenance | 1941 - Allied invasion of neutral Iran [Read More] |
| Operation Coverlet | 1943 - Planned British invasion of Guernsey in the English Channel |
| Operation Crimson | 1944 - Allied naval air attack on Sabang, Sumatra |
| Operation Cromwell | 1940 - British codename to warn that a German invasion of Great Britain was imminent. |
| Operation Croquet | 1944 - Allied anti-shipping patrols off Norway |
| Operation Crossbow | 1943-1944 - British raids against German rocket research, production, and launch sites |
| Operation Crossword | 1945 - Negotiations which led to the German surrender in Italy; known as Operation Sunrise for Americans |
| Operation Crucible | 1940 - British codename to warn of a potential Luftwaffe attack on London. |
| Operation Crusader | 1941 - British attempt to relieve Tobruk, Libya |
| Operation Culverin | 1943 - Proposed Allied invasion of northern Sumatra |
| Operation Cupola | 1944 - British anti-shipping patrols off Norway |
| Operation Cycle | 1940 - Allied evacuation from Le Havre, France |
| Operation Cyclone | 1944 - American airborne landings on Noemfoor, New Guinea [Read More] |
| Operation Cyrill | 1943 - Axis anti-partisan operation at the Glogovnica Canal on the Casma River in the Independent State of Croatia |
| Operation D | 1942 - Japanese invasion of the Andaman Islands [Read More] |
| Operation Daffodil | 1942 - British and Commonwealth raid against Tobruk, Libya; part of Operation Agreement |
| Operation Dampfhamm | 1942 - Planned German third phase of the German summer offensive in the Caucasus region of Southern Russia |
| Operation Dan-Go | 1944 - Japanese operation after the failed Operation U-Go offensive in India |
| Operation Dauntless | 1944 - British Army action during Operation Overlord |
| Operation Deadlight | 1945 - Post-war scuttling of German submarines |
| Operation Defoe | 1944 - British Special Air Service (SAS) reconnaissance operation in the Argentan area of Normandy, France; part of Operation Overlord |
| Operation Delphin | 1943 - German anti-partisan operation in the Dalmatian islands in Adriatic Sea |
| Operation Delphin | 1943 - German withdrawal from Saaremaa, Estonia |
| Operation Delta | 1943 - German anti-partisan operation in Western Greece |
| Operation Derfflinger | 1942 - Canceled German pincer operation against Ostazchkov, Russia |
| Operation Dervish | 1941 - The first British Arctic convoy to Russia |
| Operation Detachment | 1945 - American invasion of Iwo Jima, Japan [Read More] |
| Operation Devon | 1943 - British No.3 Commando amphibious landing to outflank the German lines at Termoli, Italy |
| Operation Diadem | 1944 - Allied attack on the German Gustav Line in Italy [Read More] |
| Operation Dingson | 1944 - French commando operation sponsored by British Special Air Service (SAS) to organize and arm French Resistance fighters; part of Operation Overlord |
| Operation Diplomat | 1944 - Allied exercise in preparation for joint operations against the Japanese |
| Operation Dirschau | 1939 - German operation to safeguard the rail bridge at Tczew, Poland during the invasion |
| Operation Diver | 1944 - Defense of London, England, Britain against German V-1 rocket attack |
| Operation Domino | 1943 - The second aborted German Arctic sortie by Scharnhorst, Prinz Eugen, and destroyers |
| Operation Donnerkeil | 1942 - German aircraft cover for Operation Cerberus [Read More] |
| Operation Donnerkeil | 1943 - German anti-partisan operation in Yugoslavia |
| Operation Donnerschlag | 1942 - Planned German break-out movement from Stalingrad, Russia |
| Operation Donnerschlag | 1943 - German anti-partisan operation along the river Obdol in Russia |
| Operation Doppelkopf | 1944 - German offensive to relieve troops fighting in Latvia |
| Operation Doppelschlag | 1942 - German anti-shipping operation off Novaya Zemlya by Admiral Scheer and Admiral Hipper |
| Operation Doppelsprung | 1944 - Planned German evacuation of bridgeheads at the river Maas (Meuse) west of Arnhem, the Netherlands |
| Operation Dora | 1942 - German operation to disrupt British supply lines in Southern Libya |
| Operation Double Strike | 1943 - American air raid on Regensburg and Schweinfurt, Germany |
| Operation Dove | 1944 - Allied gliderborne attack in Southern Frace; part of Operation Dragoon [Read More] |
| Operation Downfall | 1945 - Planned American invasion of Japanese home islands [Read More] |
| Operation Dracula | 1945 - British amphibious assault on Rangoon, Burma |
| Operation Dragoon | 1944 - Allied invasion of Southern France; original name was Operation Anvil [Read More] |
| Operation Draufgänger | 1943 - German anti-partisan operation in Russia |
| Operation Draufgänger | 1944 - German anti-partisan operation in Montenegro, Yugoslavia and in Northern Albania |
| Operation Dreiecke | 1942 - German anti-partisan operation in Bryansk, Russia |
| Operation Dreznica | 1944 - Axis anti-partisan operation in the Velika Kapela Mountains in the Independent State of Croatia to secure a supply route |
| Operation Driftwood | 1944 - Failed British raid on rail targets north of Rome, Italy |
| Operation Dubrovnik | 1944 - Axis anti-partisan operation along the road between Zagreb and Varazdin in the Independent State of Croatia |
| Operation Dubrovnik II | 1944 - Axis anti-partisan operation along the road between Zagreb and Varazdin in the Independent State of Croatia; continuation of Operation Dubrovnik |
| Operation Dukedom | 1945 - British search and destroy operation for Japanese cruiser Haguro |
| Operation Dunhill | 1944 - Aborted British Special Air Service (SAS) operation to support Operation Cobra |
| Operation Dunlop | 1941 - British delivery of 24 Hurricane fighters to Malta [Read More] |
| Operation Dynamo | 1940 - Allied evacuation from Dunkirk, France [Read More] |
| Operation Dünkirchen I | 1944 - Axis anti-partisan operation in the Krašic region in the Independent State of Croatia |
| Operation Dünkirchen II | 1944 - Axis anti-partisan operation in the Krašic region in the Independent State of Croatia; continuation of Operation Dünkirchen I |
| Operation E | 1941 - Japanese invasion of Thailand and Northeast Malaya [Read More] |
| Operation Edelwei | 1942 - Axis attack of the oil-rich Caucasus region in southern Russia; part of Operation Braunschweig |
| Operation Eiche | 1943 - German operation to rescue Benito Mussolini from Allied imprisonment |
| Operation Eilbote I | 1943 - German attacks on Allied positions at the Dorsal Mountains in Tunisia |
| Operation Eilbote II | 1943 - Canceled German attacks on Allied positions at the Dorsal Mountains in Tunisia following Operation Eilbote I |
| Operation Einhorn | 1944 - German anti-partisan operation in Greece |
| Operation Eisb | 1943 - German anti-partisan operation in Bryansk, Russia |
| Operation Eisb | 1943 - German invasion of Kos, Greece |
| Operation Eisen | 1940 - German commando operation to occupy the bridge over the Albert Canal in Belgium |
| Operation Eisenhammer | 1943 - Planned German aerial bombing operation against power generators in Moscow and Gorky, Russia |
| Operation Eisfjord | 1943 - German naval bombardment of Spitzbergen, Svalbard Islands, Norway |
| Operation Eissto | 1941 - German air raids against Russian Baltic Fleet at Kronstadt and Leningrad, Russia |
| Operation EJ | 1941 - British anti-shipping operation off Norway |
| Operation Elster | 1944 - German agents infiltration into the US to gather intelligence on Manhattan Project |
| Operation Emil | 1944 - Axis anti-partisan operation west of Knin in the Independent State of Croatia |
| Operation Encore | 1945 - Allied attack on German mountain positions in Italy |
| Operation Epsilon | 1945 - British evesdropping on imprisoned German scientists |
| Operation Epsom | 1944 - Failed British attack on Caen, France; part of Operation Overlord [Read More] |
| Operation Ernteeinbringung | 1944 - German anti-partisan operation east of Zagreb, Yugoslavia |
| Operation Erntefest I | 1943 - German anti-partisan operation west of Ossipovichi, Russia |
| Operation Erntefest II | 1943 - German anti-partisan operation near Minsk and Slutsk, Belorussia |
| Operation Excess | 1941 - British convoy to Malta [Read More] |
| Operation Exporter | 1941 - Allied invasion of Syria and Lebanon [Read More] |
| Fall Falke | 1940 - German attacks against the Maginot Line on the French-German border; part of Fall Grün [Read More] |
| Operation Falke | 1944 - Axis anti-partisan operation in the Papuk Mountain and Bilo gora Mountains in the Independent State of Croatia |
| Fall Falke | 1944 - German defense plan in case of an Allied invasion of Norway |
| Operation Felix | 1940 - Planned German invasion of Gibraltar via the Iberian Peninsula |
| Operation Ferdinand | 1942 - Allied coastwatchers operating on Japanese-occupied islands in the Pacific Ocean |
| Operation Ferdinand | 1943 - German anti-partisan operation in the Fruška gora Mountains in Syrmia in the Independent State of Croatia |
| Operation Ferdinand | 1944 - Diversionary Allied attack to create the deception of an attack on Genoa, Italy before the start of Operation Dragoon |
| Operation Ferkel | 1943 - Axis anti-partisan operation in the mountains northeast of Tuzla in the Independent State of Croatia |
| Operation Ferkel | 1943 - German anti-partisan operation in Bryansk, Russia |
| Operation Festung | 1940 - German paratrooper attack on the Hague, Rotterdam, Dordrecht, and Moerdijk in the Netherlands; part of Fall Gelb |
| Operation Feuerstein | 1943 - German defensive build-up of the Italian Alpine passes |
| Operation Feuerwehr | 1944 - Failed German anti-partisan operation in Macedonia, Yugoslavia |
| Operation Feuerzange | 1944 - German anti-partisan operation in the Dalmatian islands in Adriatic Sea |
| Operation Feuerzauber | 1936-1939 - German transfer of weapons and personnel to Francisco Franco's forces in the Spanish Civil War [Read More] |
| Operation Feuerzauber | 1942 - Planned German attack on Leningrad, Russia; renamed to Operation Nordlicht |
| Operation Feuerzauber | 1944 - German destruction of bridges near Florence, Italy |
| Operation Fischfang | 1944 - German counterattack to the Allied invasion of Anzio, Italy [Read More] |
| Operation Fischreiher | 1942 - German attack on Stalingrad and Astrakhan, Russia; part of Fall Blau [Read More] |
| Operation Flax | 1943 - Allied air operation to disrupt the Axis system of air transport to Africa |
| Operation Fledermaus | 1941 - German aerial bombing of British airfields |
| Operation Fliederblüte | 1943 - German attack of British units at the 'Banana Ridge' in Tunisia |
| Operation Fliegenfänger | 1944 - German anti-partisan operation in Memici and Osmaci in Bosnia, Yugoslavia |
| Operation Flintlock | 1944 - American invasion of Marshall Islands [Read More] |
| Operation Foca | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Foil | 1945 - British operation to cut the submarine telephone cables off Hong Kong |
| Operation Forager | 1944 - American invasion of Mariana Islands [Read More] |
| Operation Forelle | 1944 - German operation to disrupt Russian supply lines on the Danube River near Budapest, Hungary |
| Fall Forelle I | 1944 - German defense plan in case of an Allied invasion of the Balkans via the Adriatic Sea |
| Fall Forelle II | 1944 - German defense plan in case of an Allied invasion of the Balkans via the Aegean Sea |
| Operation Fork | 1940 - British invasion of Iceland [Read More] |
| Operation Fortitude | 1944 - Allied deceptive operations to hint two false invasions before the start of Operation Overlord |
| Operation Foxchase | 1945 - British anti-shipping operation off Norway |
| Operation Frankton | 1942 - British commando raid on German shipping in the harbor of Bordeaux, France |
| Operation Frantic | 1943 - The use of Soviet airfields by bombers of Western Allies |
| Operation Franz | 1943 - German commando operation against British supply lines in Iran |
| Operation Fredericus I | 1942 - German attack on Kharkov, Russia |
| Operation Fredericus II | 1942 - German attack on Odessa, Ukraine as a follow-up operation to Operation Fredericus I |
| Operation Freiheit | 1945 - German destruction of a bridge on the Oder River |
| Operation Freischütz | 1943 - German anti-partisan operation |
| Operation Freischütz | 1944 - Canceled German operation to take the island of Vis off Croatia, Yugoslavia |
| Operation Freischütz | 1944 - German relief operation for troops trapped near Minsk, Belorussia |
| Operation Freshman | 1942 - Attempted British raid on a heavy water plant at Vemork, Norway |
| Operation Frieda | 1942 - German anti-partisan operation |
| Operation Fritz | 1941 - Planned German invasion of the Soviet Union; later abandoned in favor of Operation Barbarossa |
| Operation Fronttheater | 1943 - The first aborted German Arctic sortie by Scharnhorst, Prinz Eugen, and destroyers |
| Operation Froschlaich | 1941 - German air raids against Russian Navy at Leningrad, Russia; part of Operation Eisstoss |
| Operation Fruška gora | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Frühling | 1944 - German anti-partisan operation in the Jura Mountains in Southern France |
| Operation Frühlingsanfang | 1944 - German anti-partisan operation at Primorska and Gorenjska in Slovenia, Yugoslavia |
| Operation Frühlingserwachen | 1945 - German counter-attack against Russian troops near Budapest, Hungary |
| Operation Frühlingsfest | 1944 - German anti-partisan operation in Lepel, Belorussia as a follow-up operation of Operation Regenschauer |
| Operation Frühlingssturm | 1945 - Axis anti-partisan operation along the Danube River in the Independent State of Croatia |
| Operation Frühlingswetter | 1944 - Axis anti-partisan operation in the area between Knin and Kistanje in the Independent State of Croatia to secure a supply route |
| Operation Frühlungswind | 1943 - Axis attack on Faid Pass near Sidi bou Zid, Tunisia |
| Operation FS | 1944 - Canceled Japanese plan to isolate Australia by capturing New Caledonia, Samoa, and Fiji |
| Operation FU | 1941 - Japanese invasion of Indochina [Read More] |
| Operation Fu-Go | 1944 - Japanese aerial bombing of the United States via balloons |
| Operation Fuchsjagd | 1944 - Axis anti-partisan operation in the Ivanzcica Mountains in the Independent State of Croatia |
| Operation Fuchsjagd III | 1944 - Axis anti-partisan operation in the Kalnik Mountains in the Independent State of Croatia |
| Operation Fustian | 1943 - British airborne attack on Primasole Bridge over River Simeto south of Mount Etna, Sicily, Italy |
| Operation Föhn | 1944 - Axis anti-partisan operation west of Banja Luka to open the road between Bosanski Novi and Prijedor in the Independent State of Croatia |
| Operation G | 1940 - German paratrooper attack on Ghent in the Netherlands; part of Fall Gelb |
| Operation Gaff | 1944 - British Special Air Service (SAS) assassination attempt on Erwin Rommel |
| Operation Galvanic | 1943 - American invasion of Gilbert Islands [Read More] |
| Operation Gambit | 1944 - Allied usage of X-Craft midget submarines as navigation beacons off Sword and Juno beaches; part of Operation Neptune |
| Operation Gamma | 1943 - German anti-partisan operation in Yugoslavia |
| Operation Garden | 1944 - British armor attack along highway 69 in the Netherlands; part of Operation Market Garden [Read More] |
| Operation Gaudo | 1941 - Italian naval action against British ships north of Crete, Greece |
| Operation Gauntlet | 1941 - British raid on Spitzbergen, Svalbard Islands, Norway |
| Operation Geier | 1940 - German attack of the Maginot Line on the French-Germany border north of Kehl, Germany; part of Fall Grün [Read More] |
| Operation Geiserich | 1943 - Axis anti-partisan operation in Split on the coast of the Independent State of Croatia |
| Fall Gelb | 1940 - German invasion of the Low Countries of Belgium, the Netherlands, and Luxembourg [Read More] |
| Operation Gemsbock | 1944 - German anti-partisan operation in the region near the Greek-Albanian border before Operation Einhorn |
| Operation Georg | 1942 - Planned German attack on Leningrad, Russia; renamed to Operation Feuerzauber |
| Operation Gertraud | 1945 - Planned German aerial bombing of hydropower plants east of Moscow, Russia |
| Operation Gertrud | 1942 - Planned German response in case of Turkey joining the Allies |
| Operation Gesellenprüfung | 1943 - German minelaying operation via S-Boats |
| Operation Giant II | 1944 - Canceled landing of US 82nd Airborne near Rome, Italy; part of Operation Avalanche [Read More] |
| Operation Gisella | 1942 - Planned German invasion of the Iberian peninsula; revised from Operation Isabella |
| Operation Gneisenau | 1940 - German diversionary attack on two bridges on the French-German border; part of Fall Grün |
| Operation Goalpost | 1942 - American attack on Port Lyautey (now Kenitra), Morocco; part of Operation Torch [Read More] |
| Operation Goldflake | 1945 - Canadian administrative operation that moved troops from Italy to northwestern Europe |
| Operation Gomorrah | 1943 - British bombing of Hamburg, Germany |
| Operation Goodwood | 1944 - British armor breakout attempt from the Normandy beachhead/attempt to tie down German units in support of Operation Cobra [Read More] |
| Operation Goodwood I | 1944 - British carrier attack on German battleship Tirpitz |
| Operation Goodwood II | 1944 - British carrier attack on German battleship Tirpitz |
| Operation Goodwood III | 1944 - British carrier attack on German battleship Tirpitz |
| Operation Goodwood IV | 1944 - British carrier attack on German battleship Tirpitz |
| Operation Granit | 1940 - German paratrooper attack on Belgian Fort Eben-Emael |
| Operation Greenline | 1944 - British attack on Caen, France; part of Operation Overlord [Read More] |
| Operation Greif | 1942 - German anti-partisan operation in Orsha and Witebsk, Belorussia |
| Operation Greif | 1944 - German infiltration of Allied rear areas using Allied uniforms; part of Wacht am Rhein [Read More] |
| Operation Grenade | 1945 - American crossing of the Roer (Rur) River |
| Operation Grouse | 1942 - Norwegian guide party for Operation Freshman |
| Operation Großer Schlag | 1944 - Planned German mass-deployment of fighters against Allied bombers |
| Fall Grün | 1938 - German plan for invasion of Czechoslovakia |
| Fall Grün | 1940 - German attacks against the Maginot Line on the French-German border in conjunction with Fall Braun [Read More] |
| Fall Grün | 1940 - German plan for a diversionary invasion of Ireland in support of Operation Seelöwe |
| Operation Grün | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Grün II | 1943 - Axis anti-partisan operation at the Kupa River between the Sava and the Farkašic-Kravarsko line in the Independent State of Croatia |
| Operation Grüne Bewegung | 1940 - Planned German landing at Brighton, England, Britain; part of Operation Seelöwe |
| Operation Grünpfeil | 1940 - German occupation of the Channel Islands |
| Operation Grünspecht | 1942 - German anti-partisan operation in Bryansk, Russia |
| Operation Guillotine | 1941 - British transfer of troops to Cyprus |
| Operation Guillotine | 1943 - British advance from Cyrenaica to Tripolitania, Libya |
| Operation Gunnerside | 1943 - Second British raid on a heavy water plant at Vemork, Norway |
| Operation Gustav | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Gymnast | 1943 - Early name for Operation Torch, the Allied invasion of North Africa [Read More] |
| Operation Günther | 1943 - German anti-partisan operation in Smolensk, Russia prior to Operation Zitadelle |
| Operation Götz v. Berlichingen | 1941 - German air raids against Russian Navy at Leningrad, Russia; part of Operation Eissto |
| Operation H | 1942 - Japanese invasion of Celebes [Read More] |
| Operation Ha-Go | 1944 - Japanese action to isolate and destroy Anglo-Indian forces at Arakan, Burma; precursor to Operation U-Go |
| Project Habakkuk | 1943 - British project to construct an aircraft carrier from ice for North Atlantic defense |
| Operation Habicht | 1940 - German diversionary attack on Mulhouse, France; part of Fall Grün [Read More] |
| Operation Habicht | 1943 - German anti-partisan operation |
| Operation Hagen | 1943 - German operation in the Caucasus region of Southern Russia |
| Operation Hagen Bewegung | 1943 - German evacuation operation near Oryol, Russia |
| Operation Haifisch | 1943 - German anti-partisan operation in Trogir in Croatia, Yugoslavia |
| Operation Haifisch I | 1941 - German deceptive operation to hint a false invasion of Scotland and England, Britain from Norway before the start of Operation Barbarossa |
| Operation Haifisch II | 1941 - German deceptive operation to hint a false invasion of Scotland and England, Britain from Norway before the start of Operation Barbarossa |
| Operation Hailstone | 1944 - American air attack on Truk, Caroline Islands [Read More] |
| Operation Halbred | 1941 - British convoy from Gibraltar to Malta [Read More] |
| Operation Hambone/Copperhead | 1944 - Allied deceptive operation to hint a false invasion of Southern France before the start of Operation Overlord |
| Operation Hamburg | 1943 - German anti-partisan operation in Bryansk, Russia |
| Fall Hanna | 1944 - German defense plan in case of an Allied invasion of Denmark |
| Operation Hannibal | 1941 - German invasion of the island of Lemnos, Greece |
| Operation Hannibal | 1941 - German operation to take the bridge over the Corinth Canal, near Corinth, Greece |
| Operation Hannibal | 1945 - German evacuation of East Prussia, Germany [Read More] |
| Operation Hannover I | 1942 - German operation near Vyazma, Russia |
| Operation Hannover II | 1942 - German anti-partisan operation in the upper Dnieper River region (Belorussia and Ukraine) |
| Operation Harborage | 1945 - American capture of German atomic materials ahead of French occupation |
| Operation Harpoon | 1942 - British convoy from Gibraltar to Malta [Read More] |
| Operation Harpune | 1941 - German deceptive operation to hint a false invasion of southern England, Britain from France before the start of Operation Barbarossa |
| Operation Hartmut | 1940 - German submarine operations in Norwegian waters |
| Operation Hasenjagd | 1943 - German anti-partisan operation in Gomel, Belorussia |
| Operation Hats | 1940 - British convoy from Alexandria to Malta [Read More] |
| Operation Haudegen | 1944 - German intelligence gathering in Spitzbergen, Norway |
| Operation Hawkeye | 1944 - American naval radar research |
| Operation Hecht | 1942 - First German submarine wolfpack raid in the North Atlantic Ocean |
| Operation Heckle | 1944 - British attack on the floating U-boat dock in Puddefjord, Bergen harbour, Norway by miniature submarine X-24 (Lt. H.P.Westacott RN). |
| Operation Heide | 1944 - German flooding of parts of the Netherlands to hinder Allied advance; later renamed to Operation Storch |
| Operation Heinrich | 1944 - German deceptive operation in support of Wacht am Rhein |
| Operation Herbstgewitter I | 1943 - German anti-partisan operation at Peljesac peninsula in the Croatia, Yugoslavia |
| Operation Herbstgewitter II | 1943 - German anti-partisan operation at Peljesac peninsula in the Croatia, Yugoslavia |
| Operation Herbstgewitter III | 1943 - German anti-partisan operations at the islands of Mljet, Hvar, Brac, and Solta off the coast of Croatia, Yugoslavia |
| Operation Herbstgewitter IV | 1943 - German anti-partisan operations at the islands of Mljet, Hvar, Brac, and Solta off the coast of Croatia, Yugoslavia |
| Operation Herbstlaub | 1942 - Canceled German operation in the Caucasus region of Southern Russia, near Krasnoarmeisk, Ukraine and Beketovka, Russia |
| Operation Herbstnebel | 1944 - Rejected German plan to withdraw German troops in Italy behind the Po River |
| Operation Herbstreise | 1940 - Planned German diversionary invasion of Scotland, Britain; part of Operation Seelöwe |
| Operation Herbstzeitlose | 1942 - Canceled German plan to advance to the Don and Volga Rivers in the Caucasus region of Southern Russia |
| Operation Herkules | 1942 - Canceled German airborne invasion of Malta |
| Operation Hermann | 1943 - German anti-partisan operation in Vilnius and Polotsk, Belorussia |
| Operation Hermann | 1945 - German attack on British air units in Belgium and the Netherlands |
| Operation Hermelin | 1943 - German cruiser Lützow operation in the Baltic Sea |
| Operation Heu-Aktion | 1944 - German enslavement of East European children between the age of 10 and 15 to work in the German armament industry |
| Operation Hikari | 1945 - Japanese reconnaissance of Ulithi Atoll, Caroline Islands; part of Operation Arashi |
| Operation Himmler | 1939 - German staged attacks in Poland to justify invasion; part of Fall Weiss |
| Operation Hinein | 1944 - German submarine operation against an Allied convoy in the North Atlantic Ocean |
| Operation Hohes Venn | 1944 - German paratrooper operation as a part of Operation Greif of Wacht am Rhein |
| Operation Holder | 1943 - British special naval transport to Murmansk |
| Operation Holzauge | 1942 - German activities in Greeland |
| Operation Hornbläser | 1942 - Planned German attack on Alexandria harbor, Egypt |
| Operation Hornung | 1943 - German anti-partisan operation |
| Operation Horrido | 1944 - German anti-partisan operation in Thessaloniki, Greece |
| Operation Houndsmith | 1944 - British Special Air Service (SAS) commando action near Dijon, France |
| Operation Hubertus | 1943 - German anti-partisan operation in Pindus Mountains region of Greece |
| Operation Hummel | 1940 - German intelligence gathering for Operation Seelöwe |
| Operation Hummer | 1940-1945 - German infiltration of Britain |
| Operation Hundesohn | 1944 - German occupation of Sofia, Bulgaria |
| Operation Hurricane | 1944 - Allied bombing of Duisburg and Cologne in North Rhine-Westphalia, Germany |
| Operation Hurry | 1940 - British delivery of Hurricane fighters to Malta [Read More] |
| Operation Husar | 1943 - Canceled German anti-shipping operation in Kara Sea by Lützow |
| Operation Husky | 1943 - Allied invasion of Sicily, Italy [Read More] |
| Operation Hyacinth | 1942 - British and Commonwealth raid against Barce, Libya; part of Operation Agreement |
| Operation Hydra | 1943 - British air raid on rocket research facilities at Peenemünde, Germany; part of Operation Crossbow |
| Operation I | 1943 - Japanese air raid against Allied advances on New Guinea and Guadalcanal, Solomon Islands |
| Operation Iassy-Kishinev | 1944 - Russian invasion of Romania |
| Operation Ibex | 1944 - German air raids on London and other nearby British cities |
| Operation Iceberg | 1945 - American invasion of Okinawa, Japan [Read More] |
| Operation Ichi-Go | 1944 - Japanese attack in Eastern China to link up Northern China and Indochina [Read More] |
| Operation Ikarus | 1940 - Planned German invasion of Iceland in response to British Operation Fork; originally planned to launch in conjunction with Operation Seelöwe [Read More] |
| Operation Ilona | 1942 - Planned German invasion of the Iberian peninsula; revised from Operation Isabella |
| Operation Iltis | 1944 - German anti-partisan operation in Thessaloniki, Greece |
| Operation Infatuate | 1944 - Allied assault on Walcheren Island, Zeeland, the Netherlands |
| Operation Ingeborg | 1944 - Axis anti-partisan operation east of Karlovac and north of the Kupa River in the Independent State of Croatia |
| Operation Inmate | 1945 - British and New Zealand naval bombardment of Truk, Caroline Islands |
| Operation Insel | 1943 - German action at Hydra Island, Greece |
| Operation Irak | 1941 - German deployment of aircraft to Iraq |
| Operation Ironclad | 1942 - British invasion of Madagascar [Read More] |
| Operation Isabella | 1941 - Planned German invasion of the Iberian peninsula |
| Operation Iskra | 1943 - Russian counter-offensive near Leningrad, Russia |
| Operation Istrien | 1943 - German anti-partisan operation in Northern Italy |
| Operation Ivan | 1943 - Axis anti-partisan operation in the Moslavacka Mountains in the Independent State of Croatia |
| Operation J | 1942 - Japanese invasion of the Dutch East Indies [Read More] |
| Operation Jacob | 1942 - German anti-partisan operation in Uzda, Belorussia |
| Operation Jael | 1944 - Allied deceptive operation to hint continued Allied focus in the Mediterranean Sea when the Allies had already decided on a cross-Channel invasion |
| Operation Jajce | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Jajce | 1944 - Axis anti-partisan operation in the Vrbas Valley in the Independent State of Croatia |
| Operation Jajce II | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Jajce III | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Jaywick | 1943 - Anglo-Australian attack on Japanese shipping in Singapore harbor |
| Operation Jericho | 1944 - Low-level Allied air raid on Amiens, France prison to release French Resistance and political prisoners |
| Operation Jonquil | 1943 - British seaborne rescue operation for POWs in Italy, in conjunction with Operation Begonia |
| Operation Jubilee | 1942 - Allied invasion of Dieppe, France [Read More] |
| Operation Judas | 1944 - German anti-partisan operation in Bulgaria |
| Operation Judgment | 1940 - British air attack on the Italian fleet in Taranto harbor, Italy |
| Operation Juggler | 1943 - 8th USAAF disastrous attack on the German ball-bearing factories concentrated at Schweinfurt in Southern Germany. |
| Operation Juneau | 1945 - American minesweeping operations off Okinawa, Japan [Read More] |
| Operation Juno | 1940 - German naval operation against British shipping off Narvik, Norway [Read More] |
| Operation Juno | 1940 - German naval operation to disrupt Allied supplies to Norway |
| Operation Jupiter | 1942 - Planned British invasion of Norway |
| Operation Jupiter | 1942 - Second phase of the failed Russian Operation Mars attack near Moscow, Russia |
| Operation Jupiter | 1944 - British attack on Hill 112 near Caen, France; part of Operation Overlord [Read More] |
| Operation K | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation K-1 | 1942 - Japanese reconnaissance and air raid on Pearl Harbor, Hawaii, United States [Read More] |
| Operation K-2 | 1942 - Japanese reconnaissance and air raid on Pearl Harbor, Hawaii, United States [Read More] |
| Operation Ka | 1942 - Japanese plan to destroy the American fleet and recapture Guadalcanal, Solomon Islands |
| Kampf um Rom | 1944 - German defense plan for the Nettuno area in Italy |
| Operation Kan-Go | 1944 - Japanese defensive plan in Southern Burma |
| Operation Karin | 1943 - German deployment of naval vessels in the English Channel |
| Operation Karlsbad | 1941 - German anti-partisan operation in the Berezina River region of Belorussia |
| Operation Karlshafen | 1940 - German attack against Kristiansand, Norway; part of Operation Weserübung |
| Operation Kastanie | 1944 - Axis anti-partisan operation in the Prijedor-Sanski Most-Omarska area in the Independent State of Croatia |
| Operation Kasten | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Kathleen | 1940 - Planned German invasion of Ireland |
| Operation Kaub | 1944 - Axis anti-partisan operation at the Sava River in the Independent State of Croatia, destroying all boats and ferries |
| Operation KE | 1943 - Japanese evacuation of Guadalcanal, Solomon Islands [Read More] |
| Operation KE | 1943 - Japanese evacuation of Kiska, Aleutian Islands, Alaska, United States [Read More] |
| Operation Keelhaul | 1945 - American and British forced repatriation of Soviet prisoners of war back to the Soviet Union |
| Operation Ken | 1945 - Planned Japanese operation to use transports to land suicide troops on American airfields in the Mariana Islands |
| Operation Ketsu-Go | 1945 - Japanese defense plan against potential American invasion of the Japanese home islands |
| Operation Kiebitz | 1943 - German POW rescue operation via submarine into the St. Lawrence River in Canada |
| Operation Kikusui | 1945 - Japanese special attack against American ships off Okinawa, Japan [Read More] |
| Operation Kitten | 1944 - Allied advance to the Seine River, France; part of Operation Overlord [Read More] |
| Operation Klabautermann | 1942 - German operation against Russian supply lines near Leningrad, Russia |
| Operation Klara | 1943 - Axis anti-partisan operation in the Velika Kladuša area in the Independent State of Croatia |
| Operation Klašnice | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Klette I | 1942 - German anti-partisan operation in Bryansk, Russia |
| Operation Koltso | 1942-1943 - Russian attacks on German troops trapped within Stalingrad, Russia |
| Operation Kon | 1944 - Japanese defensive operation on Biak Island, New Guinea |
| Operation Kon-Go | 1945 - Planned Japanese offensive against American ships using manned torpedoes |
| Operation Konrad | 1945 - Axis attack near Budapest, Hungary to relieve the sourrnded city |
| Operation Konstantin | 1943 - German seizure of Italian equipment and territory upon the Italian surrender [Read More] |
| Operation Kopenhagen | 1943 - German defensive build-up of the French and Italian Alpine passes |
| Operation Koralle | 1944 - German anti-partisan operation in the Sporades Islands, Greece; previously named Operation Neptun |
| Operation Kormoran | 1943 - German anti-partisan operation in Minsk and Borisov, Belorussia |
| Operation Kornblume | 1944 - Axis anti-partisan operation in the Fruška gora Mountains in the Independent State of Croatia |
| Operation Kozara | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Krause I | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Krause II | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Kreml | 1942 - German deceptive operation in support of Operation Edelwei |
| Operation Kreuzotter | 1944 - German anti-partisan operation in Greece |
| Operation Kreševo | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Krimhilde Bewegung | 1943 - German evacuation of the Caucasus region in Southern Russia |
| Operation Krohcol | 1942 - British pre-emptive strike into Siam |
| Operation Kuckucksei | 1943 - Canceled German attack on British units at the Fondouk Pass, Tunisia |
| Operation Kugelblitz | 1943 - Axis anti-partisan operation in the area between Rogatica and Vlasenica in the Independent State of Croatia |
| Operation Kugelblitz | 1943 - German anti-partisan operation near Vitebsk, Belarus |
| Operation Kutuzov | 1943 - Russian attack Germans near Oryol, Russia at the same time as the Battle of Kursk |
| Operation L | 1942 - Japanese landing operation in Palembang, Sumatra |
| Operation Lachsfang | 1942 - Planned combined German and Finnish attack against Kandalaksha and Belomorsk, Russia |
| Operation Ladbroke | 1943 - British gliderborne attack near Syracuse, Sicily, Italy; part of Operation Husky [Read More] |
| Operation Landbrücke | 1942 - German attempt to hold a narrow connection near Demyansk, south of Leningrad, Russia to prevent envelopment |
| Operation Landsturm | 1943 - German anti-partisan operation in Makarska in Croatia, Yugoslavia |
| Operation Landwirt | 1944 - German submarine operation against the Allied fleet off France during the Normandy invasion [Read More] |
| Operation Lauffeuer | 1944 - Axis anti-partisan operation in the area south of Sid and near Ilok in Syrmia in the Independent State of Croatia |
| Operation Laura | 1944 - Proposed German evacuation of Courland, Latvia |
| Operation Lawine | 1945 - Axis anti-partisan operation in the Lašva Valley and Travnik the Independent State of Croatia |
| Operation LB | 1942 - British delivery of Spitfire fighters to Malta [Read More] |
| Operation Leander | 1943 - German anti-partisan operation across the Lika Mountains to Zadar on the coast of the Independent State of Croatia after the Italian surrender |
| Operation Lehrgang | 1943 - German evacuation of Sicily, Italy over the Strait fo Messina [Read More] |
| Operation Lel | 1941 - German diversionary plan in support of Operation Beowulf II; part of Operation Nordwind |
| Operation Lentil | 1945 - British air attack on Pangkalan Brandan, Eastern Sumatra |
| Operation Leopard | 1943 - German landings on Leros of the Dodecanese Islands, Greece [Read More] |
| Operation Lichtermeer | 1940 - German air attack against British airfields for bombers |
| Operation Lichtschlag | 1942 - Canceled German attack north of Cholm, Russia near the Lovat and Kunya Rivers |
| Operation Lightfoot | 1942 - British and Commonwealth attack of El Alamein, Egypt |
| Operation Lika | 1943 - Planned German anti-partisan operation against Josip Broz Tito in Yugoslavia |
| Operation Lila | 1942 - German attempt to capture French fleet at Toulon, France |
| Operation Little Saturn | 1942 - Russian attacks in the Caucasus region of Southern Russia, aiming to further isolate the German troops trapped within Stalingrad, Russia |
| Operation Livery | 1945 - British naval air strikes on northern Malaya and air cover for minesweeping operations |
| Operation Loge | 1940 - German 65-day air offensive against London, England, Britain |
| Operation Longcloth | 1943 - British deployment of Chindit forces into Burma |
| Operation Lost | 1944 - British Special Air Service (SAS) operation to lead French Resistance fighters to disrupt German forces; part of Operation Overlord |
| Operation Loyton | 1944 - Failed British Special Air Service (SAS) action at the Vosges Mountains in eastern France |
| Operation Luchs | 1940 - Planned German breakthrough between Breisach and Strasbourg, France; part of Fall Grün |
| Operation Lucid | 1940 - Canceled British attempt to use fire ships to destroy German barges that could be used for a British invasion |
| Operation Lucie | 1940 - Planned German invasion of the Dutch island of Texel in the North Sea |
| Operation Ludwig | 1944 - German plan against an Allied landing at Livorno, Italy |
| Operation Luftparade | 1940 - German night raid against British air bases |
| Operation Lug | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Lupo | 1942 - Italian convoy missions to Tripoli, Libya |
| Operation Lustre | 1941 - Allied reinforcement of Greece |
| Operation Lusty | 1945 - American capture of German scientific documents |
| Operation Lüttich | 1944 - German counter-offensive at Mortain, France in response to Operation Cobra |
| Operation Lyuban | 1942 - Failed Russian attempt to break the German seige on Leningrad, Russia |
| Operation Löwe | 1940 - Planned German invasion of Britain; precursor of Operation Seelöwe |
| Operation M | 1941 - Japanese invasion of the Philippine Islands [Read More] |
| M.43 | 1942 - Italian convoy missions to Tripoli, Libya |
| MAGIC | 1939-1945 - American code name for decoded Japanese cipher system |
| Operation Magic Carpet | 1945-1946 - American operation to transport American servicemen back to the United States |
| Operation Maibaum | 1944 - German anti-partisan operation in Vlasenica in Bosnia, Yugoslavia |
| Operation Maigewitter | 1943 - German anti-partisan operation |
| Operation Maigewitter | 1944 - German anti-partisan operation in Northern Greece |
| Operation Maigewitter | 1945 - German anti-partisan operation in Tuzla in Bosnia, Yugoslavia |
| Operation Maikäfer | 1942 - German anti-partisan operation in Babruysk, Belorussia |
| Operation Majestic | 1945 - Planned Allied invasion of Japanese home islands; scrapped in favor of Operation Olympic |
| Operation Malaria | 1942 - German anti-partisan operation in Osipovichi, Belorussia |
| Manhattan Project | 1941-1945 - American nuclear weapon research [Read More] |
| Operation Manjaca Mountains | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Manna | 1945 - Allied paradrop of food to German-occupied Netherlands |
| Operation Maple | 1944 - Allied mine-laying operation in and at the entrances to the English Channel; part of Operation Neptune |
| Fall Marder | 1944 - German defense plan in case of an Allied invasion of Italy; activated after Allies launched Operation Shingle [Read More] |
| Fall Marder I | 1944 - German defense plan in case of an Allied invasion of Italy via the Ligurian Sea; part of Fall Marder |
| Fall Marder II | 1944 - German defense plan in case of an Allied invasion of Italy via the Adriatic Sea; part of Fall Marder |
| Operation Margarethe I | 1944 - German occupation of Hungary |
| Operation Margarethe II | 1944 - German occupation of Romania |
| Operation Marianne | 1940 - German motorboat action off Dover, England, Britain |
| Operation Marita | 1941 - German invasion of Greece [Read More] |
| Operation Market | 1944 - Allied airborne attack in the Netherlands; part of Operation Market Garden [Read More] |
| Operation Market Garden | 1944 - Failed Allied attempt to secure bridges over the main rivers of Netherlands |
| Operation Mars | 1942 - Failed Russian attack near Moscow, Russia [Read More] |
| Operation Martin | 1944 - Planned German attack of the Ardennes region as proposed by Gerd von Rundstet; rejected by Adolf Hitler for being too conservative |
| Operation Mascot | 1944 - The failed British carrier attack on German battleship Tirpitz |
| Operation Matador (1941) | 1941 - Planned British pre-emptive strike into Siam from Malaya |
| Operation Matador (1945) | 1945 - British occupation of Ramree Island, Burma [Read More] |
| Operation Matterhorn | 1944 - American build-up of long range bomber bases in China and India |
| Operation Maus | 1942 - Axis drive toward the Caucasus region in Southern Russia |
| Operation Meetinghouse | 1945 - Incendiary bombing of Tokyo, Japan [Read More] |
| Operation Menace | 1940 - British and French attack on Dakar, French West Africa [Read More] |
| Operation Meridian | 1945 - British air attack on Palembang, Southern Sumatra |
| Operation Merkur | 1941 - German invasion of Crete, Greece [Read More] |
| Operation Merkur | 1943 - Axis anti-partisan operation in the Krbavsko Polje plain in the Independent State of Croatia |
| Operation Messer | 1944 - German mining of the Ligurian Sea off Northern Italy |
| Operation MI | 1942 - Failed Japanese invasion of Midway Island [Read More] |
| Operation Michael | 1943 - Canceled German evacuation of Crimea |
| Operation Millennium | 1942 - The first British 1,000 bomber raid on Cologne, Germany |
| Operation Mincemeat | 1943 - Allied deceptive operation for Operation Husky [Read More] |
| Operation Mirko | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Mission Boston | 1944 - American parachute assault near Merderet River in Normandy, France; part of Operation Neptune [Read More] |
| Mission Chicago | 1944 - American glider-borne attack in Normandy, part of Operation Neptune [Read More] |
| Mission Detroit | 1944 - American glider-borne airborne assault near Sainte-Mère-Église in Normandy, France; part of Operation Neptune [Read More] |
| Operation Mitte | 1941 - German attack on Hiiumaa, an island off Estonia; part of Operation Siegfried |
| Operation Mitte Juli | 1942 - German anti-partisan operation |
| Operation Mittelmeer | 1940-1941 - German reinforcement of the Italian Regia Aeronautica in the Mediterranean Sea |
| Operation MO | 1942 - Aborted Japanese invasion of Port Moresby, New Guinea [Read More] |
| Operation Mondscheinsonate | 1940 - German night raid on Coventry, England, Britain |
| Operation Moorbrand | 1942 - Canceled German attack near Pogostje, Russia |
| Operation Morgenluft | 1943 - German attack on Gafsa, Tunisia |
| Operation Morgenröte | 1940 - German attack on several Dutch bridges [Read More] |
| Operation Morgenröte | 1944 - German counterattack to the Allied invasion of Anzio and Nettuno, Italy [Read More] |
| Operation Morgenstern | 1944 - Axis anti-partisan operation in the Krbavsko Polje plain in the Independent State of Croatia |
| Operation Morgenwind I | 1944 - German landing on the island of Brac off the coast of Croatia, Yugoslavia |
| Operation Morgenwind II | 1944 - German landing on the island of Solta off the coast of Croatia, Yugoslavia |
| Operation Moslavacka gora | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Most III | 1944 - The transfer of captured V-2 rocket components from Poland to Britain; also known as Operation Wildhorn III |
| Mulberry | 1944 - Allied construction of artificial anchorages off Normandy, France using block ships |
| Operation Musketoon | 1942 - British and Norwegian destruction of a power station in Norway |
| Operation München | 1944 - German fallback to the Arno River in the Tuscany region of Italy |
| Operation München I | 1942 - German anti-partisan operation in Belorussia |
| Operation München II | 1942 - German anti-partisan operation in Radoshkovichi, Belorussia |
| Operation Märzfieber | 1942 - German anti-partisan operation in Belorussia |
| Operation Möwe I | 1942 - Planned German operation to sabotage aluminum factories in southern Scotland, Britain |
| Operation Möwe V | 1944 - Canceled German plan to land agents in Scotland, Britain |
| Operation N | 1940 - German paratrooper attack of Namur, Belgium |
| Operation Nachbarhilfe I | 1943 - German anti-partisan operation in Bryansk, Russia |
| Operation Nachbarhilfe II | 1943 - German anti-partisan operation in Mglin, Russia |
| Operation Napfkuchen | 1944 - German anti-partisan operation in Yugoslavia |
| Operation Narcissus | 1943 - British Special Air Service (SAS) raid on a lighthosue in Sicily, Italy; part of Operation Husky |
| Operation Nation | 1945 - Successful SOE mission (Force 136) involving Karen guerrillas to attack Japanese forces in Southern Burma. Estimates suggest that the Japanese suffered 4,000 casualties for the loss of only 70 guerrillas. |
| Operation Nau | 1941 - German diversionary plan in support of Operation Beowulf II; part of Operation Nordwind |
| Operation Naumburg | 1940 - German landing at Narvik, Norway [Read More] |
| Operation Navvy | 1943 - Allied building of the Tiddim road across the Chin hills in Central Burma. |
| Operation Nebelübung | 1940 - Planned German invasion of Liège, Belgium; part of Fall Gelb |
| Operation Nelly U | 1943 - German towing of a 3,000-ton drydock from Mariupol to Odessa, Ukraine |
| Operation Nelson | 1944 - Canceled British Special Air Service (SAS) action in France |
| Operation Neptun | 1943 - German counter-offensive at Myschanko-Berg during the Battle of Stalingrad |
| Operation Neptun | 1944 - German anti-partisan operation in the Sporades Islands, Greece; later renamed to Operation Koralle |
| Operation Neptune | 1944 - Allied attack on the Normandy, France beaches; part of Operation Overlord [Read More] |
| Operation Neuland | 1942 - German submarine operation in the Caribbean Sea |
| Operation Newton | 1944 - Free French jeep-mounted patrol in Champagne-Burgundy, France, sponsored by the British Special Air Service (SAS) |
| Operation Nibelungenfahrt | 1944 - Axis anti-partisan operation in the Krbavsko Polje plain in the Independent State of Croatia |
| Operation Nienburg | 1940 - German action against Narvik, Norway; part of Operation Weserübung [Read More] |
| Operation Nipoff | 1946-1947 - The repatriation of 70,000 surrendered Japanese from Burma. About half were repatriated over a three week period in June 1946. The remainder between March and June 1947. |
| Operation Niwi | 1940 - German troop deployment in Belgium; part of Fall Gelb [Read More] |
| Operation Nord | 1940 - German warship Admiral Scheer's raid in the North Atlantic Ocean |
| Operation Nord | 1940 - Planned German invasion of Denmark and Norway; later renamed to Operation Weserübung [Read More] |
| Operation Nordlicht | 1942 - Planned German attack on Leningrad, Russia; formerly planned as Operation Feuerzauber |
| Operation Nordlicht | 1944 - German withdrawal from the Kola Peninsula into Norway after Finland switched sides |
| Operation Nordlicht-Bewegung | 1944 - German troop deployment in Finland |
| Operation Nordmark | 1940 - German attacks against Allied ships convoys between Britain and Scandinavia |
| Operation Nordpol | 1941 - German counter-intelligence operation in the Netherlands |
| Operation Nordpol | 1942 - Canceled German operation east of Moscow, Russia |
| Operation Nordsee | 1942 - German anti-partisan operation in Mogilev, Belorussia |
| Operation Nordseetour | 1940 - The first German Atlantic operation of Admiral Hipper |
| Operation Nordwest | 1939 - German study for a potential invasion of Britain; parts of Operation Nordwest was integrated into Operation Seelöwe |
| Operation Nordwind | 1941 - German diversionary invasion of the island of Saaremaa, Estonia in support of Operation Beowulf II |
| Operation Nordwind | 1945 - German offensive in Alsace and Lorraine in northeastern France in conjunction with Wacht am Rhein [Read More] |
| Operation Nussknacker | 1944 - German torpedo boat operation off Corsica, France |
| Operation Nürnberg | 1943 - Planned German response in case of an Allied invasion of the Iberian peninsula, centering largely around the defense of the Pyrenees passes |
| Operation Obviate | 1944 - British RAF air attack on German battleship Tirpitz |
| Operation Ochsenkopf | 1942 - German counterattacks in attempt to expand the Tunis, Tunisia perimeter |
| Operation Odysseus | 1944 - German naval deployment in the Adriatic Sea and Aegean Sea |
| Operation Oldenburg | 1940 - German aerial reconnaissance of Russia natural resources |
| Operation Oldenburg | 1940 - German attack on Oslo, Norway; part of Operation Weserübung [Read More] |
| Operation Olivenernte | 1943 - Canceled German attack on Majaz al Bab, Tunisia |
| Operation Olymp | 1942 - German anti-partisan operation in Greece |
| Operation Olympic | 1945 - Planned American invasion of Japanese home islands; part of Operation Downfall [Read More] |
| Operation Orange | 1943 - German convoy off Temryuk, Southern Russia in the Sea of Azov |
| Operation Orkan | 1942 - Canceled German attack in the Belyov-Yukhnov area in Russia |
| Operation Orkan II | 1942 - German anti-partisan operation in Lublin, Poland |
| Operation Oskar | 1940 - German motorboat action off Dover, England, Britain |
| Operation Ost | 1939 - German operation in Southern Poland near the border with Czechoslovakia |
| Operation Ost | 1941 - German attack on Hiiumaa, an island off Estonia; part of Operation Siegfried |
| Generalplan Ost | 1942 - German plan for genocide throughout Europe [Read More] |
| Operation Ostern | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Ostfront | 1943 - The final German operation of Scharnhorst to intercept convoy JW-55B |
| Fall Otto | 1937 - German plan to occupy Austria |
| Operation Otto | 1938 - German plan to establish a puppet government in Austria |
| Operation Otto | 1940 - German preparations for Operation Barbarossa [Read More] |
| Operation Otto | 1943 - Axis anti-partisan operation in the Grmec Mountains in the Independent State of Croatia |
| Operation Outing I | 1944 - British anti-shipping operation in the Aegean Sea |
| Operation Outing II | 1944 - British anti-shipping operation in the Aegean Sea |
| Operation Overcast/Paperclip | 1945 - American capture of German rocket technology |
| Operation Overlord | 1944 - Allied invasion of Normandy, France [Read More] |
| Operation Ozren | 1941-1942 - German anti-partisan operations near Ozren, Yugoslavia |
| Operation Ozren | 1943 - Axis anti-partisan operation in the Sunja area in the Independent State of Croatia |
| Operation Paddle | 1944 - Canadian pursuit of German rear guard near the Seine River, France; part of Operation Overlord |
| Operation Paderborn | 1943 - The third and successful German transfer of Scharnhorst and destroyers from the Baltic Sea to Narvik, Norway |
| Operation Pamphlet | 1943 - Australian convoy transporting troops from Suez, Egypt to Australia |
| Operation Panther | 1940 - German attacks on Strasbourg, France; part of Fall Braun [Read More] |
| Operation Panther | 1943 - German anti-partisan operation at Mesovan Pass in Southeastern Croatia, Yugoslavia |
| Operation Panther | 1943 - German anti-partisan operation in Greece |
| Operation Panther | 1943 - German anti-partisan operation near Kursk, Russia after Operation Zitadelle |
| Operation Panzerfaust | 1943 - German operation to kidnap the son of Miklós Horthy's son to prevent Horthy from siding with the Allies; codename later changed to Maus |
| Operation Panzerfaust | 1944 - German occupation of Hungary |
| Operation Paravane | 1944 - British RAF air attack on German battleship Tirpitz |
| Operation Parnass | 1943 - German anti-partisan operation in Lamia, Greece |
| Operation Passport | 1945 - Amphibious landing by 25th Indian Division and 3rd Commando Brigade on the Myebon penninsula to cut Japanese lines of communication. |
| Operation Pastorious | 1942 - German plan to sabotage industrial targets at Long Island, New York, United States |
| Operation Paukenschlag | 1942 - German submarine campaign against shipping off the east coast of the United States; nicknamed 'Second Happy Time' |
| Operation Paula | 1940 - German aerial bombing of French countryside |
| Operation Paula | 1943 - German anti-partisan operation north of the Sava River in Serbia, Yugoslavia |
| Operation Pedestal | 1942 - Allied convoy from Gibraltar to Malta [Read More] |
| Operation Pegasus | 1944 - Allied rescue mission of airborne troops after the failure of Operation Market Garden [Read More] |
| Operation Peking | 1939 - Polish naval withdraw to Britain prior to German invasion [Read More] |
| Operation Perianth | 1944 - American Office of Strategic Services (OSS) supported operation in Sweden; also named Operation Sepals |
| Operation Perpetual | 1942 - Allied landing at Cap Carbon, Algeria; part of Operation Torch [Read More] |
| Operation Petrinja | 1943 - Axis anti-partisan operation at the Okucani-Lipik-Banova Jaruga-Novska area in the Independent State of Croatia |
| Operation Petrova gora I | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Petrova gora II | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Pfingstausflug | 1944 - German anti-partisan operation in Polotsk and Lepel, Belorussia |
| Operation Pfingsten | 1943 - Axis anti-partisan operation in the Prnjavor-Kotor Varoš-Teslic area in the Independent State of Croatia |
| Operation Pied Piper | 1939 - British evacuation of women and children from major cities |
| Operation Pike | 1939-1941 - British plan to invade the Soviet Union |
| Operation Pirate | 1944 - Allied training exercise at Studland Bay, England, Britain; in preparation to Operation Neptune |
| Plan Kathleen | 1941 - Irish Republican Army plan to coordinate IRA and German intelligence operations; also known as Operation Artus |
| Plan W | 1942 - Planning between the Allied countries and Ireland to counter a potential German invasion |
| Plan Z | 1939 - German plan to expand the Kriegsmarine to match the strength of the British Royal Navy |
| Operation Planet | 1944 - Canceled British carrier attack on German battleship Tirpitz |
| Operation Planspiel III | 1940 - German breakthrough of the Maginot Line between Teting und Wittring, France [Read More] |
| Planstudie 39 | 1939 - German air force research |
| Operation Platinfuchs | 1941 - German attack towards Murmansk, Russia from Finnish Petsamo, part of Operation Silberfuchs [Read More] |
| Operation Plunder | 1945 - British crossing of the Rhine River [Read More] |
| Operation Pluto | 1944 - Allied construction of undersea oil pipelines between Britain and France |
| Operation PM | 1945 - Allied removal of own naval mines off Auckland, New Zealand |
| Operation Pointblank | 1943-1944 - Allied bombing missions aimed at softening German coastal defenses in France |
| Operation Polar Star | 1943 - Failed Russian attempt to break the German seige on Leningrad, Russia |
| Operation Polarfuchs | 1941 - German attack towards Kandalaksha, Russia from Finnish Lapland, part of Operation Silberfuchs [Read More] |
| Operation Polarnacht | 1942 - German deployment of battleship Tirpitz from Wilhelmshaven, Germany to Trondheim, Norway |
| Operation Polkovodets Rumyantsev | 1943 - Russian attack against Germans near Belgorod, Russia |
| Operation Pomegranate | 1944 - British attack in Normandy in support of Operation Goodwood [Read More] |
| Operation Pomegranate | 1944 - British Special Air Service (SAS) raid against the airfield at San Egidio, Italy in support of Operation Shingle |
| Operation Portcullis | 1942 - British convoy from Alexandria, Egypt to Malta [Read More] |
| Operation Poseidon | 1943 - German operation against British troops on the Greek island of Samos; part of Operation Zwischenspiel |
| Operation Postage Able | 1944 - Allied survey of Normandy, France beaches using X-Craft and divers; in preparation to Operation Neptune |
| Operation Posthorn | 1944 - British naval air attack on shipping off Norway |
| Operation Potluck | 1944 - British anti-shipping patrol off Norway |
| Operation Prijedor | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Primrose | 1941 - British capture of German submarine U-110's Enigma cypher machine and documents by HMS Bulldog |
| Provincia di Lubiana | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Prüfstand XII | 1944 - German program to develop submarine launched V-2 rockets |
| Operation Pugilist | 1943 - British and Commonwealth attack on the Mareth Line in Libya |
| Operation Puma | 1943 - German anti-partisan operation in Greece |
| Operation Queen | 1944 - Allied offensive operation in and near Roer (Rur) valley, Germany |
| Operation Quicksilver | 1944 - Allied deceptive operation to hint a false invasion of Pas de Calais, France before the start of Operation Overlord; part of Operation Fortitude |
| Operation R | 1942 - Japanese invasion of Rabaul, New Britain and Kavieng, New Ireland [Read More] |
| Operation Rabat | 1943 - German plan to kidnap the Pope from the Vatican City |
| Operation Ratweek | 1944 - German ground and air attack on partisans on the Balkan peninsula |
| Operation Raubtier | 1942 - Canceled German attack toward the Volkhov River near Leningrad, Russia |
| Operation Raubvogelkäfig | 1940 - German attack on the Maginot Line; part of Fall Grün [Read More] |
| Operation Raureif | 1943 - Axis anti-partisan operation in Turbe in the Independent State of Croatia |
| Operation Regatta | 1941 - British invasion of Iraq from Basra up the Tigris River; part of Operation Sabine [Read More] |
| Operation Regatta | 1942 - German anti-partisan operation in the Smolensk-Gorky area in Russia |
| Operation Regatta I | 1943 - German artillery bombardment of the Strait of Kerch between the Black Sea and the Sea of Azov |
| Operation Regenbogen | 1942 - The failed German attack on Arctic convoy JW-51B by Admiral Hipper and Lützow |
| Operation Regenbogen | 1945 - Rescinded German order to scuttle German ships at the end of the war |
| Operation Regenschauer | 1944 - German anti-partisan operation in Lepel and Polozk in Belorussia |
| Operation Regenschirm | 1940 - German aerial bombing of Birmingham, England, Britain |
| Operation Regenwurm | 1945 - German plan to move V-2 rockets to avoid Allied air strikes |
| Operation Regulta | 1941 - British invasion of Iraq from Basra up the Euphrates River; part of Operation Sabine [Read More] |
| Operation Reinhard | 1943 - German systematic murder of Polish intelligentia; phase I of the German 'Final Solution' [Read More] |
| Operation Reinhard | 1944 - Axis occupation of ore mines in and around Ljubija in the Independent State of Croatia |
| Operation Renate | 1941 - German motorboat action off Dover, England, Britain |
| Operation Renate | 1944 - Axis anti-partisan operation on the Murter Peninsula in the Independent State of Croatia |
| Operation Renntier | 1941 - German occupation of Finnish Petsamo; part of Operation Silberfuchs [Read More] |
| Operation Renntier | 1944 - German anti-partisan operation in Greece |
| Operation Reservist | 1942 - Failed Allied attack on Oran, Algeria; part of Operation Torch [Read More] |
| Operation Rheinübung | 1941 - The planned German attacks on Allied shipping conducted by Bismarck and Prinz Eugen |
| Fall Richard | 1937 - German contingency planning for Soviet takeover of Spain |
| Operation Richard | 1943 - Axis anti-partisan operation near Razboj in the Independent State of Croatia |
| Operation Richard | 1944 - German defense plan in case of an Allied invasion of Italy; activated after Allies launched Operation Shingle |
| Operation Risnjak | 1942 - Italian anti-partisan operation in coastal region of Yugoslavia |
| Operation Ristow | 1943 - Axis anti-partisan operation between Bosanski Novi and Prijedor in the Independent State of Croatia |
| Operation RO | 1943 - Japanese defensive plan against Allied attacks on Rabaul, New Britain |
| Operation Roast | 1945 - British commando attack at Comacchio lagoon, Northeastern Italy |
| Operation Romeo | 1944 - Free French attack on a German coastal battery in Southern France; part of Operation Dragoon |
| Fall Rot | 1935 - German defense planning on the western border, in tandem with Fall Blau |
| Fall Rot | 1937 - Planned German invasion of Czechoslovakia |
| Fall Rot | 1939 - German bombing of Wielun, Poland; part of Fall Wei [Read More] |
| Fall Rot | 1940 - German invasion of France [Read More] |
| Operation Rouen | 1944 - Axis anti-partisan operation at the Kalnik Mountains south of the Ludbreg-Koprivnica Line in the Independent State of Croatia |
| Operation Roundel | 1945 - British convoy escort to Murmansk |
| Operation Roundhammer | 1942 - Revised planning of Operation Roundup, the planned Allied invasion of Europe |
| Operation Roundup | 1942 - Planned Allied invasion of Europe |
| Operation Royal Marine | 1940 - First British mining of the Rhine River, Germany |
| Operation Royal Marine | 1944 - Second British mining of the Rhine River, Germany |
| Operation Rumpelkammer | 1944 - Start of the German V-1 rocket attack against London, England, Britain |
| Operation Ruthless | 1939-1941 - British Admiralty plan to capture an Enigma encryption machine |
| Operation Rutter | 1942 - Planned British invasion of Dieppe, France |
| Operation Rübezahl | 1944 - German anti-partisan operation in Montenegro, Yugoslavia |
| Operation Rügen | 1937 - German bombing of Guernica, Spain [Read More] |
| Operation Röslein | 1944 - German anti-partisan operation in Macedonia, Yugoslavia |
| Operation Rösselsprung | 1942 - German naval operation to attack Arctic convoy PQ-17 |
| Operation Rösselsprung | 1944 - German attempt to capture Josip Broz Tito |
| Operation S | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Sabine | 1941 - Allied invasion of Iraq [Read More] |
| Operation Sabre | 1945 - British cutting of submarine communications cable off Saigon, Vietnam |
| Operation Safari | 1943 - German SS operation to disband the Danish military |
| Operation Salaam | 1941 - German plan to make contact with Egyptian nationalists |
| Operation Samland | 1945 - Russian attack on Königsberg, East Prussia, Germany |
| Operation Sandcrab | 1943 - American attack on Attu, Aleutian Islands, Alaska, United States [Read More] |
| Operation Sandmann | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Sankey | 1945 - British Royal Marines invasion against Cheduba Island, Burma |
| Operation Sarajevo | 1944 - Axis anti-partisan operation west of the Sesvete-Varazdin road in the Independent State of Croatia |
| Operation Satin | 1943 - Allied plan to drive between German armies in Tunisia |
| Operation Saturn | 1942 - Planned Russian attack of German troops trapped within Stalingrad, Russia; revised to Operation Little Saturn after Germans launched Operation Wintergewitter |
| Operation Savannah | 1941 - Free French attempt to ambush and kill Luftwaffe pathfinder pilots in France |
| Operation Saxifrage | 1943 - British Special Air Service (SAS) raid on the rail line between Ancona and Pescara, Italy |
| Operation Schach | 1944 - Axis anti-partisan operation in the Kordun and Banija regions in the Independent State of Croatia |
| Operation Schamil | 1942 - Planned German operation to secure Caucasus oil fields in Southern Russia with paratroopers |
| Operation Scharnhorst | 1940 - German deceptive attack in the Saarbrücken region; part of Fall Grün |
| Operation Schlussjagd | 1941 - German attack at Tula, Russia during the offensive toward Moscow |
| Operation Schlüsselblume | 1944 - Axis anti-partisan operation in western Slavonia in the Independent State of Croatia |
| Operation Schnee | 1942 - German supply mission to Norway |
| Operation Schneegestöber | 1944 - German operation to find and capture Josip Broz Tito's headquarters in Yugoslavia |
| Operation Schneeman | 1945 - German offensive in the Netherlands in conjunction with Wacht am Rhein |
| Operation Schneeschmelze | 1944 - Axis anti-partisan operation in the Zaprešic-Krapinske Toplice-Klanjec area in the Independent State of Croatia |
| Operation Schneesturm | 1943 - German anti-partisan operation in Bosnia, Yugoslavia |
| Operation Schnepfe | 1943 - German anti-partisan operation north of Vitebsk, Belorussia in conjunction with Operation Wildente |
| Operation Schwarz | 1943 - Axis anti-partisan operation in Montenegro and Herzegovina, Yugoslavia |
| Operation Schwarz | 1943 - German plan in the event of an Italian surrender |
| Operation Seehund | 1943 - German submarine mining operation |
| Operation Seelöwe | 1940 - Planned German invasion of Britain; Anglicized as 'Sealion' |
| Operation Seemöwe | 1940-1945 - German agents infiltration into Britain and Ireland |
| Operation Seeräuber | 1943 - Failed German landing on the island of Brac off the coast of Croatia, Yugoslavia |
| Operation Sepals | 1944 - American Office of Strategic Services (OSS) supported operation in Sweden; also named Operation Perianth |
| Operation Shingle | 1944 - Allied invasion of Anzio and Nettuno, Italy [Read More] |
| Operation Sho I | 1944 - Japanese attack of the American fleet off Leyte, Philippine Islands; part of Operation Sho-Go [Read More] |
| Operation Sho II | 1944 - Japanese defense plan for Formosa and the Ryukyu Islands, Japan; part of Operation Sho-Go |
| Operation Sho III | 1944 - Japanese defense plan for Honshu, Japan; part of Operation Sho-Go |
| Operation Sho IV | 1944 - Japanese defense plan for Hokkaido, Japan; part of Operation Sho-Go |
| Operation Sho-Go | 1944 - Japanese defense plan against American advances toward Japan [Read More] |
| Operation Siegfried | 1941 - German attack on Hiiumaa, an island off Estonia; part of Operation Beowulf II |
| Operation Siegfried | 1942 - German attack toward Stalingrad and the general Caucasus region in Southern Russia; part of Fall Blau |
| Operation Siegfried | 1943 - German plan to deploy Italian units to Southern France after Italian surrender |
| SIGSALY | 1943-1945 - American-developed secure speech system for highest-level Allied communications |
| Operation Silberfuchs | 1941 - German attack on Murmansk, Russia; Anglicized as 'Silver Fox' [Read More] |
| Operation Silberstreife | 1942 - Planned German operations against Allied convoys to Murmansk, Russia |
| Operation Sinyavino | 1941-1942 - Failed Russian attempt to break the German seige on Leningrad, Russia |
| Operation Sirio | 1942 - Italian convoy missions to Tripoli, Libya |
| Operation Sizilien | 1943 - German raid upon Allied occupied Spitzbergen Island, Svalbard Islands, Norway |
| Operation Skorpion | 1941 - Axis attack on the Halfaya Pass on the border of Libya and Egypt |
| Operation Skorpion | 1942 - German attack on Halfaya Pass, on the border of Libya and Egypt |
| Operation Skye | 1944 - Allied deceptive operation to hint a false invasion of Norway before the start of Operation Overlord; part of Operation Fortitude |
| Operation Slapstick | 1943 - British 1st Airborne Division landing at Taranto, Italy |
| Operation Sledgehammer | 1942 - Planned Allied invasion of Cherbourg or Brest, France; part of Operation Roundup |
| Operation Sleuth | 1944 - British pursuit of German raider in the Indian Ocean |
| Operation Slippery | 1945 - Planned British deceptive operation for Operation Zipper |
| Operation Snowdrop | 1942 - British and Commonwealth raid against Benghazi, Libya; part of Operation Agreement |
| Operation Sommernachtstraum | 1941 - Axis attack on British supply depots at Bir Khirreigat, Egypt |
| Operation Sonderaktion Krakau | 1939 - German operation to murder members of the intelligentsia at univerisites in Kraków, Poland |
| Operation Sonnenaufgang | 1944 - German attack on Allied units at Anzio, Italy [Read More] |
| Operation Sonnenblume | 1940 - German response to British Operation Compass offensive in North Africa; deployment of the German Afrika Korps in North Africa [Read More] |
| Operation Sonnenwende | 1945 - German attack of Russian troops in Choszczno, Pomerania, Germany |
| Operation Source | 1943 - British X-class midget submarine attacks on German warships based in Norway [Read More] |
| Operation Source | 1945 - British response to German Operaiton Sizilien |
| Operation Span | 1944 - Allied deceptive operation for Operation Dragoon [Read More] |
| Operation Spark | 1940 - Planned German assassination against Adolf Hitler and coup d'état against the Nazi German government |
| Operation Spark | 1943 - Russian offensive that opened a land connection into the beseiged city of Leningrad, Russia |
| Operation Speedwell | 1945 - British Special Air Service (SAS) raid to disrupt rail communications in Northern Italy |
| Operation Sportpalast | 1942 - Fail German naval operation to attack Arctic convoys PQ-12 and QP-8 |
| Operation Sportpalast | 1942 - German deployment of warships Prinz Eugen and Admiral Scheer to Norway |
| Operation Spotter | 1942 - British delivery of Spitfire fighters to Malta [Read More] |
| Operation Spring | 1944 - Canadian attack near Caen, France; part of Operation Overlord [Read More] |
| Operation Spätlese | 1942 - German anti-partisan operation north of Smolensk, Russia |
| Operation Stadthagen | 1940 - German attack on Stavanger, Norway; part of Operation Weserübung [Read More] |
| Operation Stahl | 1940 - German commando operation to occupy a bridge near Veldwezelt, Belgium [Read More] |
| Operation Stalemate | 1944 - American attack invasion of Palau Islands [Read More] |
| Operation Starvation | 1945 - American aerial mining of Japanese ports and waterways |
| Operation Steinadler | 1944 - German anti-partisan operation in Eastern Greece |
| Operation Steinbock | 1944 - German bombing of London and Southern England, Britain |
| Operation Steinschlag | 1944 - Axis anti-partisan operation near Otocac and Vrhovine in the Independent State of Croatia |
| Operation Stella Polaris | 1944 - Transfer of Finnish intelligence records, equipment, and personnel to Sweden at the end of the Continuation War to avoid Soviet capture |
| Operation Stimmung | 1941 - German diversionary plan in support of Operation Beowulf II; part of Operation Nordwind |
| Operation Stone Age | 1942 - British convoy from Alexandria, Egypt to Malta [Read More] |
| Operation Stonewall | 1943 - Allied operation to intercept blockade runners in the Bay of Biscay |
| Operation Storch | 1944 - German flooding of parts of the Netherlands to hinder Allied advance; previously named Operation Heide |
| Operation Strafe | 1941 - German bombing of Belgrade, Yugoslavia; part of Operation 25 |
| Operation Strafe | 1941 - Planned German invasion of Bulgaria |
| Operation Strangle | 1944 - American bombing of German supply lines prior to Operation Diadem |
| Operation Strike | 1943 - Final phase of the Allied assault on Tunis and Bizerte in North Africa |
| Operation Struggle | 1945 - British midget submarine attack on Japanese cruiser Takao in Singapore Harbor |
| Operation Student | 1944 - German plan to restore Benito Mussolini's power in Italy |
| Operation Sturmflut | 1941 - German attack on Kasserine Pass, Tunisia |
| Operation Störfang | 1942 - German attack on Sevastopol, Ukraine |
| Operation Stösser | 1944 - German airborne drop behind Allied lines; part of Wacht am Rhein |
| Operation Substance | 1941 - British convoy to Malta [Read More] |
| Operation Sumpf | 1942 - German operation near Demyansk, south of Leningrad, Russia |
| Operation Sumpffieber | 1942 - German anti-partisan operation in Loknja, Ukraine |
| Operation Sunrise | 1945 - Negotiations which led to the German surrender in Italy; also known as Operation Crossword for non-American Allies |
| Operation Super Gymnast | 1943 - Early name for Operation Torch, the Allied invasion of North Africa [Read More] |
| Operation Supercharge | 1942 - British and Commonwealth attack of El Alamein, Egypt |
| Operation Supercharge II | 1942 - Brtiish attack on Tebaga Gap, Tunisia |
| Operation Supply | 1941 - British anti-submarine naval patrol off Madagascar |
| Operation Surgeon | 1945 - British capture of German rocket technology |
| Operation Sussex | 1944 - French reconnaissance operation to monitor German troop movements in Normandy, France, sponsored by American Office of Strategic Services (OSS); part of Operation Overlord [Read More] |
| Operation Suvorov | 1943 - Russian attack on Smolensk, Russia |
| Operation Switchback | 1944 - Canadian offensive against the Breskens Pocket of German resistance on the southern shore of the Scheldt estuary in the southern Netherlands |
| Operation Süd | 1944 - German deceptive operation at Nettuno, Italy |
| Operation Süd-Kroatien I | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Süd-Kroatien II | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Südwind | 1941 - German defense plan against a general uprising in occupied France |
| Operation Südwind | 1941 - German diversionary attack on the island of Saaremaa, Estonia in support of Operation Beowulf II |
| Operation Südwind | 1945 - German counter-offensive from Esztergom, Hungary |
| Operation T | 1942 - Japanese invasion of northern Sumatra [Read More] |
| Operation Ta | 1943 - Japanese attack on Bougainville in the Solomon Islands |
| Operation Ta | 1944 - Japanese attack on American forces at Cape Torokina, Bougainville, Solomon Islands [Read More] |
| Operation TA | 1944 - Japanese attacks in the Philippine Islands |
| Operation Tabarin | 1943 - British Antarctic expedition for the possibility of establishing bases |
| Operation Taifun | 1941 - German offensive toward Moscow, Russia; part of Operation Barbarossa [Read More] |
| Operation Take-Ichi | 1944 - Japanese convoys to the Doberai Peninsula in Western New Guinea |
| Operation Talon | 1945 - British invasion of Akyab Island, Burma |
| Operation Tan 2 | 1945 - Japanese special attack mission against the Allied anchorage at Ulithi, Caroline Islands |
| Operation Tanne Ost | 1944 - Failed German attempt to capture Suursaari Island, Finland in the Gulf of Finland |
| Operation Tanne West | 1944 - Planned German invasion of the Åland Islands in the Baltic Sea from Finland |
| Operation Tannenbaum | 1940 - Planned German invasion of Switzerland |
| Operation Tannenbaum | 1943 - Axis anti-partisan operation in the area between Bosanski Novi and Buzim in the Independent State of Croatia |
| Operation Tannenberg | 1939 - German plan to exterminate Polish intelligentsia |
| Operation Tasma | 1943-1944 - Action of the Polish Home Army against German border guarding stations |
| Operation Tasumaki | 1944 - Planned Japanese attack on Bougainville, Solomon Islands |
| Operation Taube | 1940 - German mission to transport Irish Republican Army Chief of Staff Seán Russell from Germany to Ireland |
| Operation Taube | 1941 - German plan to support the Irish Republican Army in Ireland and Northern Ireland |
| Operation Taubenschlag | 1942 - Canceled German attack on Toropets, Russia |
| Operation Ten'ichi-Go | 1945 - Japanese naval attack against the American fleet off Okinawa, Japan; alternate name of Operation Ten-Go |
| Operation Ten-Go | 1945 - Japanese naval attack against the American fleet off Okinawa, Japan; alternate name of Operation Ten'ichi-Go |
| Operation Teslic I | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Theodor | 1943 - German convoy off Temryuk, Southern Russia in the Sea of Azov |
| Operation Theodora | 1940 - German intelligence gathering operation in North Africa |
| Operation Theseus | 1942 - Axis attack on the Allied forces in Cyrenaica, Libya and Egypt |
| Operation Thursday | 1944 - British deployment of Chindit units into Burma |
| Operation Tichwin | 1941 - German attack on Leningrad, Russia [Read More] |
| Operation Tiger | 1940 - German attack on the northern portion of the Maginot Line; part of Fall Rot [Read More] |
| Operation Tiger | 1941 - British convoy to Malta [Read More] |
| Operation Tiger | 1943 - German anti-partisan operation in Greece |
| Operation Tiger | 1944 - Allied training exercise at Slapton, England, Britain; in preparation of Operation Neptune |
| Operation Tiger Claw | 1944 - Canceled British carrier attack on German battleship Tirpitz |
| Operation Tintenfisch | 1942 - German seizure of Swiss exports |
| Operation To-Go | 1944 - Phase one of Japanese attack in Eastern China; part of Operation Ichi-Go [Read More] |
| Operation Tombola | 1945 - British Special Air Service (SAS) raid near Bologna, Italy |
| Operation Tonga | 1944 - British airborne attack east of the Orne River, Normandy, France; part of Operation Neptune [Read More] |
| Operation Toni | 1943 - German convoy off Temryuk, Southern Russia in the Sea of Azov |
| Operation Torch | 1942 - Allied invasion of French Morocco and Algeria [Read More] |
| Operation Toropets-Kholm | 1942 - Russian encirclement of German troops in Demyansk, south of Leningrad, Russia |
| Operation Totalize | 1944 - Allied break out from the Normandy, France beachhead along the Caen-Falaise road; part of Operation Overlord [Read More] |
| Operation Tracer | 1941 - British delivery of Hurricane fighters to Malta [Read More] |
| Operation Tractable | 1944 - Canadian operation against German defenses along the Caen-Falaise road to allow an Allied break out of the Normandy, France beachhead; follow-up to Operation Totalise and part of Operation Overlord [Read More] |
| Operation Transom | 1944 - Allied naval air raid on Surabaya, Java [Read More] |
| Operation Trappenjagd | 1942 - German offensive in the Kerch Peninsula, Ukraine |
| Operation Trave | 1943 - German escort operations for blockade runners |
| Operation Travnik | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Treibjagd | 1944 - German anti-partisan operation in Yugoslavia |
| Operation Treuebruch | 1944 - German occupation of the Bulgarian-held Skopje region of Macedonia, Yugoslavia |
| Operation Trio | 1942 - Axis anti-partisan operation in Bosnia and Croatia, Yugoslavia |
| Operation Trojanisches Pferd | 1940 - German operation to secure the bridge near Nijmegen in the Netherlands |
| Operation Trojanisches Pferd | 1944 - German occupation of Budapest, Hungary; part of Operation Margarethe I |
| Operation Trolist | 1944 - Axis anti-partisan operation in the Zaistovec-Preseka region in the Independent State of Croatia |
| Operation Trondheim | 1940 - German movement across the Albert Canal against Fort Eben-Emael in Belgium |
| Operation Trousers | 1944 - Allied training exercise at Slapton, England, Britain; in preparation of Operation Neptune |
| Operation Tube | 1940 - Delivery of equipment and aircraft spare parts to Malta via British submarines. [Read More] |
| Operation Tulip | 1942 - British and Commonwealth attack on Jalo oasis in Cyrenaica, Libya; part of Operation Agreement |
| Operation Tungsten | 1944 - British carrier air attack on German battleship Tirpitz |
| Operation Tunnel | 1943 - British plan to intercept German blockade runners |
| Operation Tuzla II | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation U | 1942 - Japanese invasion of Burma |
| Operation U-Go | 1944 - Japanese assault on Imphal and Kohima, India [Read More] |
| Operation Uljan | 1944 - German anti-partisan operation on the island of Ugljan off the coast of the Independent State of Croatia |
| Operation Ulm | 1943 - Planned German aerial bombing operation against Russian industries in the Ural Mountains |
| Operation Ulrich | 1943 - Axis anti-partisan operation in the Kozara Mountains in the Independent State of Croatia |
| Ultra | 1939-1945 - British code name for decoded German Enigma messages |
| Operation Una-Sava Bend | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Ungewitter | 1944 - Axis anti-partisan operation in the Papuk Mountains in the Independent State of Croatia |
| Operation Uranus | 1942 - Russian encirclement of German troops in Stalingrad, Russia [Read More] |
| Operation Ursula | 1936-1939 - German submarine operation in support of Francisco Franco's naval forces during the Spanish Civil War |
| Operation Ursula | 1943 - German anti-partisan operation in Rogachev, Belorussia |
| Operation Varazdin | 1943 - Axis anti-partisan operation in the Kalnik Mountains between Varazdin and Krizevci in the Independent State of Croatia |
| Operation Varsity | 1945 - Allied airborne operation east of the Rhine River; part of Operation Plunder |
| Operation Venezia | 1941 - German advance toward the British Gazala Line near Bir Hakeim, Libya |
| Operation Venezie | 1942 - German advance against the British Gazala Line toward Tobruk, Libya |
| Operation Vengeance | 1943 - American interception of Japanese aircraft carrying Isoroku Yamamoto [Read More] |
| Operation Veritable | 1945 - Canadian crossing of the Roer (Rur) River |
| Operation Verona | 1940-1945 - The sharing of Soviet intelligence between Americans and British |
| Operation Verrat | 1944 - German attack on forces of Dragoljub Mihailovic in Yugoslavia |
| Operation Verrat | 1944 - German attack on forces of Napoleon Zervas in Greece |
| Operation Vierecke | 1942 - German anti-partisan operation in Bryansk, Russia |
| Operation Vigorous | 1942 - British convoy from Alexandria, Egypt to Malta [Read More] |
| Operation Virovitica | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Vitality | 1944 - Canadian offensive down the South Beveland peninsula near the Scheldt estuary in the southern Netherlands |
| Operation Višegrad | 1941 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Vogelsang | 1942 - German anti-partisan operation in the Roslawl and Bryansk region of Russia |
| Operation Vulcan | 1943 - Final Allied attack on Tunis, Tunisia |
| Wacht am Rhein | 1944 - German offensive in the Ardennes; Anglicized as 'Watch on the Rhine' [Read More] |
| Operation Wal | 1940 - Aborted German plan to coordinate actions with Scottish and Welsh nationalist groups |
| Operation Waldrausch | 1944 - German anti-partisan operation in the Balkans |
| Operation Waldteufel | 1945 - German anti-partisan operation in Budapest, Hungary |
| Operation Waldwinter | 1943 - German anti-partisan operation north of Vitebsk, Belorussia |
| Operation Walfisch | 1940 - Aborted German plan to land an agent in Ireland |
| Operation Walk | 1943 - UK Guards Brigade attack on Horseshoe Hill at Mareth Line in Tunisia |
| Operation Walküre | 1944 - German attempt to overthrow Adolf Hitler, written under the cover of a plan to foil potential worker rebellions; Anglicized as 'Valkyre' |
| Operation Walzertraum | 1944 - German landing on the island of Hvar off the coast of Croatia, Yugoslavia; part of Operation Herbstgewitter III and Operation Herbstgewitter IV |
| Operation Wasserkante | 1939 - German aerial bombing of Warsaw, Poland |
| Operation Watchtower | 1942 - American invasion of Guadalcanal, Solomon Islands [Read More] |
| Operation Weber | 1941 - German naval operation off the coast of Southern England, Britain |
| Operation Wei | 1942 - German anti-partisan operations in Croatia, Yugoslavia |
| Operation Weihnachtsmann | 1943 - German anti-partisan operation in the Balkans |
| Fall Weiß | 1939 - German invasion of Poland [Read More] |
| Operation Weiß I | 1943 - German anti-partisan operation in Sarajevo, Bosnia, Yugoslavia |
| Operation Weiß II | 1943 - German anti-partisan operation in Sarajevo, Bosnia, Yugoslavia; continuation of Operation Weiß I |
| Operation Werewolf | 1945 - German anti-partisan operation in Croatia, Yugoslavia |
| Operation Werewolf | 1945 - German fighter deployment against Allied bombing |
| Operation Weserübung | 1940 - German invasion of Denmark and Norway [Read More] |
| Operation Weserübung Nord | 1940 - German attack on Trondheim and Narvik, Norway; part of Operation Weserübung [Read More] |
| Operation Weserübung Sud | 1940 - German attack on Bergen, Kristiansand, and Oslo, Norway; part of Operation Weserübung [Read More] |
| Operation Wespennest I | 1940 - German destruction of rail links between Switzerland and France |
| Operation Wespennest II | 1940 - German destruction of rail links between Switzerland and France |
| Operation West | 1941 - German attack on Hiiumaa, an island off Estonia; part of Operation Siegfried |
| Operation West-Bosnien | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Weststurm | 1941 - German naval operation in support of Operation Beowulf II |
| Operation Weststurm | 1944 - German naval bombardment of Sworbe, Estonia |
| Operation Westwind | 1941 - German diversionary plan in support of Operation Beowulf II |
| Operation White | 1940 - British delivery of Hurricane fighters to Malta [Read More] |
| Operation Wieniec | 1942 - Polish Zwiazek Odwetu sabotage against German railway transport |
| Operation Wiesengrund | 1942 - German occupation of the Fisherman's Peninsula in northern Scandinavia |
| Operation Wiking | 1943 - German operations in the Caucasus region of Southern Russia |
| Operation Wikinger | 1940 - Sortie by German destroyers into the North Sea |
| Operation Wikinger | 1944 - German offensive in the islands off the Dalmatian coast of Yugoslavia |
| Operation Wildente | 1940 - German naval and air operation in Trondheim, Norway |
| Operation Wildente | 1943 - German anti-partisan operation north of Vitebsk, Belorussia in conjunction with Operation Schnepfe |
| Operation Wildhorn III | 1944 - The transfer of captured V-2 rocket components from Poland to Britain; also known as Operation Most III |
| Operation Wildsau | 1943 - German anti-partisan operation in Russia |
| Operation Wildsau | 1943 - German anti-partisan operation in Tuzla, Bosnia, Yugoslavia |
| Operation Wildsau | 1944 - Axis anti-partisan operation west of the railroad connecting Ðurmanec and Krapinske Toplice in the Independent State of Croatia |
| Operation Wilfred | 1940 - Failed British Admiralty plan to lay two live and one fake minefields in Norwegian waters. |
| Operation Wilhelm | 1942 - German operation against Volchansk, Russia |
| Operation Windsor | 1944 - Canadian attack on Carpiquet, France near Caen; part of Operation Overlord [Read More] |
| Operation Windstoss | 1943 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Winkelreid | 1942 - German operation within the Demyansk Pocket near Leningrad, Russia |
| Operation Winterende | 1944 - German anti-partisan operation in Slovenia, Yugoslavia; part of Operation Frühlingsanfang |
| Operation Wintergewitter | 1944 - Axis attack on the Americans in the Appennine Mountains, Italy |
| Operation Wintermärchen | 1942 - German attack between the Volga and Don Rivers |
| Operation Wintermärchen | 1944 - German attack on American troops in Italy |
| Operation Winterzauber | 1943 - German anti-partisan operation in Lithuania |
| Operation Wolke | 1942 - German transfer to troops to Norway |
| Operation Wolkenbruch | 1943 - Failed German anti-partisan operation in Northern Yugoslavia |
| Operation Wop | 1943 - American occupation of Gafsa, Tunisia |
| Operation Worek | 1939 - Polish naval defense of the Polish coast |
| Operation Wulf | 1943 - German anti-partisan operation in Kordun in Bosnia, Banovina and Turopolje in Croatia, Yugoslavia |
| Operation Wulf | 1944 - German anti-partisan operation in Thessaloniki, Greece |
| Operation Wunderland | 1942 - German anti-shipping operation in Kara Sea and Barents Sea by warship Admiral Scheer |
| Operation Wunderland II | 1943 - Planned German naval operation involving warship Admiral Scheer in the Siberian Sea |
| Operation Yarmouth | 1943 - German artillery bombardment of Yeysk, Russia |
| Operation Z | 1941 - Japanese attack on Pearl Harbor, Hawaii, United States [Read More] |
| Operation Zagorje | 1943 - Axis anti-partisan operation in the Kalnik Mountains in the Novi Marof area in the Independent State of Croatia |
| Operation Zahnarzt | 1945 - German operation in the area of Molsheim, France and Zabern, Germany |
| Operation Zarin | 1942 - German mining action off Novaya Zemlya archipelago in the Arctic Ocean by Admiral Hipper and destroyers |
| Operation Zauberflöte | 1942 - German operation to maneuver damaged Prinz Eugen from Trondheim, Norway to Kiel, Germany |
| Operation Zenica-Zavidovici | 1942 - Axis anti-partisan operation in the Independent State of Croatia |
| Operation Zeppelin | 1944 - Allied deceptive operation to hint a false invasion of Crete, western Greece, or the Romanian Black Sea coast before the start of Operation Overlord |
| Operation Zeppelin | 1944 - Failed German operation to destroy powerplants in Moscow, Russia |
| Operation Zerberus | 1942 - Break-out of German capital ships from Brest, France to Norway; Anglicized as 'Cerberus' and nicknamed by the British as 'Channel Dash' [Read More] |
| Operation Ziethen | 1943 - German anti-partisan operation in Livno, Bosnia, Yugoslavia |
| Operation Ziethen | 1943 - Planned German evacuation from the Demyansk Pocket near Leningrad, Russia |
| Operation Zigeunerbaron | 1943 - German anti-partisan operation in Bryansk, Russia |
| Operation Zipper | 1945 - Planned British amphibious invasion of Malaya |
| Operation Zitadelle | 1943 - German offensive at Kursk, Russia [Read More] |
| Operation Zitronella | 1943 - German raid against a Norwegian/British station at the Svalbard Islands |
| Operation Zombie | 1945 - Failed British Special Air Service (SAS) operation to block the railway through Brenner Pass on the Italy-Austria border; alternative name of Operation Cold Comfort |
| Operation Zumberak IV | 1944 - Axis anti-partisan operation in the Plesivica Mountains in the Independent State of Croatia |
| Operation Zwischenspiel | 1943 - German attack on the Greek island of Samos; part of Operation Leopard |
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