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• » 12 Dec 1943

• Yamato departed Truk to cover for troop transport operation BO-1. ww2dbase [Yamato | CPC]
• Feldmarschall Rommel was appointed the head of Armeegruppe B based in France. ww2dbase [Erwin Rommel | TH]
• In Moscow, Russia, a treaty of friendship was signed between Czechoslovakia and the Soviet Union. ww2dbase [TH]
• A treaty of amity, mutual aid and collaboration after the war was concluded by the Soviet Union with Czechoslovakia. ww2dbase [AC]

• TBF Avengers from USS Bogue attacked the surfaced German submarine U-172 in the eastern Atlantic using Mark 24 FIDO acoustic homing torpedoes. U-172 evaded the attack but a 27-hour running battle followed. ww2dbase [TBF Avenger | Conclusion of the Battle of the Atlantic | U-172 | Bogue | Mark XXIV | DS]

• Shokaku departed Truk, Caroline Islands for Yokosuka, Japan. ww2dbase [Shokaku | Truk | CPC]
• Japanese hospital ship Hikawa Maru departed Truk, Caroline Islands. ww2dbase [Hikawa Maru | Truk | CPC]
• Repair ship Akashi began repairing light cruiser Nagara at Truk, Caroline Islands. ww2dbase [Akashi | Truk | CPC]

• Joseph Stilwell arrived in Chongqing, China. ww2dbase [Joseph Stilwell | Chongqing | CPC]

• 18 RAF Mosquito aircraft attacked Essen, Germany while 9 RAF Mosquito aircraft attacked Düsseldorf, Germany. ww2dbase [Bombing of Hamburg, Dresden, and Other Cities | CPC]

• USS Seahorse arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol. ww2dbase [Pearl Harbor Navy Base and Ford Island Naval Air Station | Seahorse | Pearl Harbor, Oahu | CPC]
• Barbers Point Naval Air Station: More of ACORN-21 arrived on board. ww2dbase [Barbers Point Naval Air Station | Ewa, Oahu | DS]

• The Canadian attack in "The Gully" region in Italy was met with resistance, suffering heavy casualties. ww2dbase [Advance to the Gustav Line | CPC]

• USS Alabama arrived at Efate Island, New Hebrides Islands. ww2dbase [Alabama | Port Havannah, Efate | CPC]

• Allied convoy JW-55A departed Liverpool, England, United Kingdom. ww2dbase [Arctic Convoys | Liverpool, England | CPC]
• Jean Knox relinquished the temporary rank of chief controller of the British Auxiliary Territorial Service. ww2dbase [Jean Knox | England | CPC]

• USS Wake Island departed San Francisco, California, United States. ww2dbase [Wake Island | San Francisco, California | CPC]
• Submarine Barbero was launched at Groton, Connecticut, United States, sponsored by Mrs. Katherine R. Keating. ww2dbase [Barbero | Electric Boat Company | Groton, Connecticut | CPC]
• USS Harder arrived at Mare Island Navy Yard in Vallejo, California, United States for a scheduled overhaul. ww2dbase [Harder | Mare Island Navy Yard | Vallejo, California | CPC]
• Preston was launched at San Pedro, California, United States, sponsored by sponsored by Mrs. R. F. Gross. ww2dbase [Preston (Fletcher-class) | Bethlehem San Pedro Shipyard | San Pedro, California | CPC]

12 Dec 1943 Interactive Map