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. 100 Group RAF shot down for 70 losses. The gradually increasing threat from the RAF fighters also created what the Luftwaffe crews nicknamed "Moskito Panik" as the night fighter crews were never sure when or where they may come under attack from the marauding 100 Group fighters. Top Mosquito ace with 100 Group was Wing Commander Branse Burbridge of 85 Squadron, with 21 claims from 1944–45. The bomber squadrons of 100 Group utilised various specialist electronic jamming devices to disrupt German radio communications and radar. During 100 Group's existence over 32 different devices were evaluated and used. Specially equipped 100 Group aircraft would