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
No. 50 Squadron RAF April 1945. The squadron flew 7,135 sorties during the war with a loss of 176 aircraft. It replaced its Lancasters with Avro Lincolns in 1946, disbanding at Waddington on 31 January 1951. No 50 Squadron re-formed at RAF Binbrook on 15 August 1952, equipped with the English Electric Canberra light jet bomber. It moved to RAF Upwood in January 1956, disbanding on 1 October 1959. The squadron reformed again at RAF Waddington on 1 August 1962 equipped with the Avro Vulcan V bomber, using ex-617 Squadron aircraft made surplus after 617 Squadron re-equipped with Vulcan B.2s. It received Vulcan B.2s