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• 458 American B-29 bombers attacked Osaka harbor, Japan in poor weather. 148 P-51 Mustang fighters flew in escort, and 27 were lost, many due to collisions due to poor visibility. 6 ships were sunk by the attack while another 6 were damaged; many naval mines were also laid in the harbor. ww2dbase [Bombing of Tokyo and Other Cities | CPC]
• Knowing the fate that would await them at the hands of the Soviets, a pitched battle broke out between British troops and the 28,000 strong Cossack Corps (White Russians who had always opposed the Communists and had been fighting for the Germans), when it was announced that they were to be repatriated to the Russian zone of Austria. Some 700 Cossacks and their families were killed by the British, trampled to death or commit suicide. Almost all the Cossacks who were sent back disappeared without trace. ww2dbase [Germany's Surrender | AC]
• USS Makin Island departed Okinawa, Japan area for Guam, Mariana Islands. ww2dbase [Makin Island | DS]
• The Japanese Navy 10th Air Fleet attached to the Combined Fleet was reorganized to contain eight air groups. The 13th Air Fleet attached to the 10th Area Fleet was reorganized to contain one air flotilla and two air groups. ww2dbase [CPC]
• The United States Marine Corps' Supply Service FMFPac, whose responsibilities included ensuring beach logistic supply to hostile shores, was redesignated as Service Command FMFPac to control the scattered island bases and service and supply battalions spread across the Pacific Ocean. ww2dbase [AC]
• The United States Marine Corps 7th and 8th Field Depots were redesignated as service regiments and reorganized to include headquarters and service, motor transport, and supply and maintenance battalions. ww2dbase [AC]
• USS Chub gave chase to a Japanese convoy in the Java Sea, firing two spreads of three torpedoes on separate occasions; all torpedoes missed. ww2dbase [Chub | CPC]
• Boleslaw Duch was awarded Knight's Cross of the Virtuti Militari. ww2dbase [Boleslaw Duch | CPC]
• Destroyers USS Nicholas, USS O'Bannon, and USS Taylor departed Subic Bay, Luzon bound for Leyte Gulf, Philippines. ww2dbase [Nicholas | DS]

• Kuroshio No. 2, formerly known as landing ship No. 149, was sunk by a US submarine off Sumatra, Dutch East Indies. ww2dbase [No. 101/103-class | Sumatra | CPC]

• USS Sea Robin departed Pearl Harbor, US Territory of Hawaii for her third war patrol. ww2dbase [Pearl Harbor Navy Base and Ford Island Naval Air Station | Sea Robin | Honolulu, Oahu | CPC]
• USS Pintado departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol on lifeguard station off Japan. ww2dbase [Pintado | Pearl Harbor Navy Base and Ford Island Naval Air Station | Honolulu, Oahu | CPC]
• USS Skipjack departed Pearl Harbor, US Territory of Hawaii. ww2dbase [Pearl Harbor Navy Base and Ford Island Naval Air Station | Skipjack | Pearl Harbor, Oahu | CPC]

• Light carrier Hosho was assigned to the habor defense force at Kure, Japan as a reserve ship, which meant her crew was reduced to half the standard complement size. ww2dbase [Hosho | Kure, Hiroshima | CPC]
• I-401 departed Kure, Japan ww2dbase [I-401 | Kure, Hiroshima | CPC]

• Georgy Zhukov was made a Hero of the Soviet Union for the third time. ww2dbase [Georgy Zhukov | CPC]

1 Jun 1945 Interactive Map