Boeing B-17 Flying Fortress NAN10-50.jpg|thumb|B-17 modified for testing of the [[Pratt & Whitney T34|XT-34 turboprop]]. When testing concluded, the aircraft was restored to stock configuration as the "[[Liberty Belle (B-17)|Liberty Belle]]", but was lost in a post-forced-landing fire near [[Oswego, Illinois]] on 13 June 2011.]] [[Category:Boeing aircraft|B-17 Flying Fortress]] [[Category:United States bomber aircraft 1930–1939]] [[Category:Four-engined tractor aircraft]] [[Category:Low-wing aircraft]] [[Category:World War II bombers of the United States]] [[Category:Boeing B-17 Flying Fortress| ]] [[Category:Aircraft first flown in 1935]] Boeing B-17 Flying Fortress The Boeing B-17 Flying Fortress is a four-engined heavy bomber developed in the 1930s for the United States Army Air Corps (USAAC). Competing
The Bomber Command War Diaries Record Office. The Bomber Command War Diaries The Bomber Command War Diaries (subtitled: "An Operational Reference Book, 1939 -1945") is a book by the British military historian Martin Middlebrook and the researcher Chris Everitt that documents every operation by RAF Bomber Command in Europe in World War II. The book also details the operational performances of each squadron and group and it remains in print today. Everitt who had served in the RAF throughout the war as ground staff was the recently retired Chief Administrative Officer of Slough College and his research for the book involved over 300 visits to