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 Finningley operate Vulcan bombers. A year later No. 18 Squadron RAF with ECM Vickers Valiants was also established at Finningley. In 1961, No. 101 Squadron RAF took its Vulcans to RAF Waddington changing places with the Vulcan training organisation, No. 230 Operational Conversion Unit RAF. It was two years from 101 Sqn leaving that in 1961, the Valiant having seen its day, No. 18 Squadron was disbanded. The Vulcan OCU stayed with RAF Finningley from June 1961 until December 1969. In 1970 there was an arson attack on Number 2 Hangar by a serving RAF member. After the hangar was locked