Boeing YB-40 Flying Fortress Boeing YB-40 Flying Fortress The Boeing YB-40 Flying Fortress was a modification for operational testing purposes of the B-17 Flying Fortress bomber aircraft, converted to act as a heavily armed gunship for other bombers during World War II. At the time of its development, long-range fighter aircraft such as the North American P-51 Mustang were just entering quantity production, and thus were not yet available to accompany bombers all the way from England to Germany and back. Work on the prototype, Project V-139, began in September 1942 by converting the second production B-17F-1-BO (serial number 41-24341) built. Conversion work was
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