No. 5 Group RAF effective squadrons of Bomber Command, personified by No 617 Squadron the "Dambusters", formed from 5 Group aircrew in March 1943. Most of the group's main airfields were around Lincoln, including RAF Scampton. By the end of the war the group had grown to 15 squadrons. The group was noted for its high accuracy bombing, being involved the sinking of the "Tirpitz" in November 1944 and the shattering of the strategic Bielefeld railway viaduct in March 1945. The Group introduced new weapons operationally, including Barnes Wallis's "bouncing" and his Tallboy and Grand Slam "earthquake" bombs. The group was disbanded on 15
RAF Bassingbourn a series of newspaper articles written by John Steinbeck during the spring and summer of 1943. Captain Clark Gable had temporary duty at Bassingbourn while producing a gunnery film for the USAAF. It also served as the location for the fictional "28th Bomb Group" in the 1950 Humphrey Bogart film "Chain Lightning". Away from Hollywood, but still in the movies, RAF Bassingbourn was also the setting for the Airfield-based shots in the 1955 film, "The Dambusters", featuring Richard Todd and Michael Redgrave. The RAF resumed occupation of Bassingbourn on 26 June 1945, the airfield was officially returned on 10 July