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 Uxbridge May 1936, No. 11 Group RAF was headquartered at RAF Uxbridge under the command of Air Vice Marshal Philip Joubert de la Ferté, who was succeeded by Sir Ernest Gossage in January 1937. The ADGB was reorganised on 13 July 1936, with control of fighter aircraft passing to the newly established RAF Fighter Command, which moved to RAF Bentley Priory. The following day the remaining elements of ADGB became RAF Bomber Command, headquartered in Hillingdon House. Planning for the new 11 Group Operations Room (within what became known as the Battle of Britain Bunker) began in August 1937. Initially it