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 Drem Spitfire aircraft, and joined the RAF's Fighter Command. In 1942, Royal Navy personnel were posted to RAF Drem and in 1945 the unit was handed over to the Admiralty and renamed HMS Nighthawk. On 15 March 1946, the unit was returned to the Air Ministry although it was closed and then decommissioned not long after that. At present, the RAF Drem Museum is housed in what was RAF Drem's mess accommodation. RAF Drem Royal Air Force station Drem or RAF Drem is a former Royal Air Force station, just north of the village of Drem in East Lothian, Scotland. The