B-17 Flying Fortress units of the United States Army Air Forces 2d Bombardment Group, Langley Field, Virginia on 11 January 1936; the first production B-17B was delivered on 29 March 1939 also to the 2nd Bombardment Group. A total of 12,677 production Fortresses was built before production came to an end. In August 1944, the Boeing B-17 equipped no less than 33 overseas combat groups. The last Boeing-built B-17G was delivered to the USAAF on 13 April 1945. Following the end of World War II, the Flying Fortress was rapidly withdrawn from USAAF service, being replaced by the B-29 Superfortress. Literally thousands of Fortresses used in combat in Europe by Eighth
Military history of the United Kingdom during World War II strength due to the crippling of Germany's fuel supplies by American bombing of synthetic oil plants. There remained one last great controversy during the war which would blacken the name of Bomber Command and surpass the firestorm of Hamburg in both destruction and casualties. In February 1945, as Soviet forces closed in on the German city of Dresden, which had been largely spared of heavy bombing raids due to its historic status, they asked for attacks to be made on the extensive transport links around the population centre. Bomber Command and American forces obliged, subjecting the city to a series