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• The Central Committee of the Soviet Communist Party ordered the security forces to deport the entire population of the Volga German Autonomous Republic to destinations in Central Asia and Siberia. ww2dbase [AC]
• The US Army-US Marine Corps 1st Joint Training Force under Major General Holland M. Smith was redesignated the Atlantic Amphibious Force. ww2dbase [CPC]
• Before dawn, British bombers attacked railway yards at Hanover, Germany. After sundown, 78 British bombers, escorted by 485 fighters, conducted the heaviest daylight attack against Germany to date, targeting the powerplants near Köln (Fortuna Power Station in Knapsack and Goldenburg Power Station in Quadrath) and other targets in a wide area. The Germans were only able to scramble few fighters, but anti-aircraft fire was heavy. The Germans suffered four fighters shot down (plus five likely shot down) and heavy damage to both powerplants; the British suffered 12 British Blenheim bombers shot down and 10 British fighters shot down. ww2dbase [Bombing of Hamburg, Dresden, and Other Cities | CPC]
• HMS Picotee (Lieutenant R. A. Harrison) was torpedoed and sunk by the German submarine U-568 in the North Atlantic. ww2dbase [AC]
• Zhao Chengshou signed a secret armistice with the Japanese. ww2dbase [Zhao Chengshou | CPC]
• Light carrier Hosho became the flagship of Carrier Division 3. ww2dbase [Hosho | CPC]

• Crown Prince Yi Un was assigned to Jinzhou, Liaoning Province, China. ww2dbase [Yi Un | Jinzhou, Liaoning | CPC]

• French Marshal Philippe Pétain appointed Admiral François Darlan as Minister for War, the Navy, the Air and the Colonies. General Maxime Weygand was thus placed under Darlan's orders. ww2dbase [François Darlan | AC]
• Alpino Bagnolini arrived at Bordeaux, France at 1200 hours, ending her sixth war patrol. ww2dbase [Alpino Bagnolini | Bordeaux, Aquitaine | CPC]

• Battleship No. 1 departed Kure, Japan for trials. ww2dbase [Yamato | Kure, Hiroshima | CPC]

• The Soviet Politburo granted thousands of Polish prisoners of war amnesty for the formation of a Polish unit under General Wladislaw Anders to fight against Germany. ww2dbase [CPC]
• Semyon Timoshenko drafted an order calling for the execution of deserters; it would be revised by Joseph Stalin and issued as Order No. 270 four days later. ww2dbase [Semyon Timoshenko | Moscow | CPC]

• No. 489 (NZ) Squadron RAF was formed at RAF Leuchars, Fife, Scotland, United Kingdom from New Zealand personnel under the command of Wing Commander J. A. S. Brown. The squadron would see extensive service on anti-shipping strikes in the North Sea and protection of the North Cape convoys. ww2dbase [Leuchars, Scotland | AC]

• The United States Congress passed a modification to the Selective Service Act, which extended the service period of draftees as requested by Franklin Roosevelt, by a single vote. ww2dbase [Washington | CPC]

12 Aug 1941 Interactive Map