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. 342 Squadron RAF No. 342 Squadron RAF The No. 342 Squadron also known in French as ""Groupe de Bombardement n° 1/20 "Lorraine"", was a Free French squadron in the RAF during World War II. No. 342 Squadron was formed on 7 April 1943 at RAF West Raynham with personnel from the Free French Air Forces ("Forces aériennes françaises libres") transferred from the Middle East, in particular the personnel of the French Escadrilles "Metz" and "Nancy". The squadron was part of No. 2 Group RAF of RAF Bomber Command and equipped with Douglas Mk IIIA Bostons (aka Douglas A-20C Havocs). They later moved with