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. 80 Wing RAF 400 lives and another 600 serious injuries, while Anti-Aircraft Command was forced to redeploy hundreds of guns to cover potential "Baedeker" targets. By the end of 1942, 80 Wing included a flying unit, known as the Wireless Intelligence and Development Unit (WIDU) at RAF Boscombe Down in Wiltshire, which was later renamed No. 109 Squadron RAF. Among other roles, 109 Sqn simulated enemy air raids, to test ECM equipment. The headquarters of 80 Wing later moved to the Handley-Page factory aerodrome at Radlett, also known as RAF Radlett. From November 1943, it became part of No. 100 Group RAF –