Low Level Bombsight, Mark III use in October 1942. Coastal Command had priority on deliveries and only small numbers reached Bomber Command. The first examples arrived in May 1943 and were fit to Douglas Boston bombers of 2 Group. In 1944 the sight was trialled on the Avro Lancasters of No. 617 Squadron RAF, the Dambusters, who carried out a single low-level attack with them in late 1944. Most examples sent to Bomber Command equipped a small number of De Havilland Mosquito aircraft in No. 627 Squadron RAF (who normally operated as pathfinders) and No. 8 Group RAF (Pathfinder Force). The sight remained with Coastal
RAF West Ruislip RAF West Ruislip RAF West Ruislip was a Ministry of Defence site, located in Ickenham within the London Borough of Hillingdon. The base was originally built as a depot for the Royal Air Force (RAF), split by what is now the Chiltern Main Line. North of the railway was RAF Blenheim Crescent, which housed the RAF Records Office and the depot's original personnel accommodation. The site was leased to the US Air Force in 1955, followed by the US Navy in 1975, eventually housing the Navy Exchange of the U.S. Naval Activities, United Kingdom command, and the Navy's Morale, Welfare