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 Manston Others included RAF Greenham Common, RAF Aldergrove and RAF Machrihanish. For a number of years, the base operated as a Master Diversion Airfield, open 24 hours every day. Manston, uniquely in the UK, also had a 'foam carpet' crash landing system, where two tractors would pull tankers laying a metre thick layer of foam over a strip of runway, for aircraft with landing gear problems. RAF Manston was home to a helicopter search and rescue (SAR) flight from No. 22 Squadron RAF from 1961, operating Westland Whirlwind aircraft. The flight was withdrawn in 1969, but the outcry led to the