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. 609 Squadron RAF attempt to counter the Luftwaffe's Focke-Wulf Fw 190 fighter. It became apparent that the Typhoon was better suited for low level attacks against ground targets, such as airfields and armoured vehicles. Before this change of focus, 609 Squadron had become the top scoring squadron in the RAF for the period of early 1943. They were the first Typhoon squadron to achieve 200 kills. The squadron also gained new pilots, including the first German citizen to fly with the RAF, cinematographer Sir Ken Adam. He and his brother Dennis were the first German-born pilots in the RAF, Dennis joining No. 183