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 Hemswell the Second World War. Later used again by RAF Bomber Command as a nuclear ballistic missile base during the Cold War it closed to military use in 1967. On 19 March 1940 RAF Hemswell-based Handley Page Hampdens of No. 61 Squadron RAF were the first Bomber Command aircraft to drop bombs on German soil during the Second World War. The target was the Hörnum seaplane base on the northern Germany coast. RAF Hemswell was immortalised on film when it was used as a substitute for RAF Scampton in all the ground-based filming of the 1954 war film The Dambusters. The