Flying Fortress (film) one of the few British studios to operate during the Second World War, produced "Flying Fortress" as part of a series of patriotic films aiding the war effort. Warner received co-operation from the Air Ministry, with facilities at RAF Polebrook being provided, along with a Supermarine Spitfire, Bristol Blenheim, and three early Boeing B-17Cs (Fortess Is in RAF service) from No. 90 Squadron RAF, released for use in the production. A number of shooting miniatures were also created, including scale Fortress Is. The burning engine fire depicted at the conclusion of the film is based on an actual World War
American Theater (World War II) other heavy bomber projects were cancelled. During the final months of World War II, Japan had planned to use plague as a biological weapon against U.S. civilians in San Diego, California, during Operation Cherry Blossoms at Night. The plan was set to launch at night on September 22, 1945. However it was shelved after Yoshijiro Umezu, Chief of the Imperial Japanese Army General Staff, rejected it. Additionally Japan surrendered five weeks before the plan had been intended to take place. These false alarms have generally been attributed to military and civilian inexperience with war and poor radars of the era.