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. 183 Squadron RAF in preparation for its deployment to the Asia theatre of operations. Before this deployment could happen the war with Japan ended. At the end of World War 2 with the draw down from war-time strength the RAF started to disband and renumber squadrons. Higher numbered squadrons were generally replaced with the lower, and so more senior, squadron numbers with the exception of famous units such as 617 Squadron were disbanded. As a result the squadron was disbanded upon re-numbering as No. 54 Squadron RAF on 15 November 1945. The following have commanded 617 Squadron: No. 183 Squadron RAF No. 183