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
No. 56 Squadron RAF No. 56 Squadron RAF Number 56 Squadron, nicknamed 'the Firebirds' for their ability to always reappear intact regardless of the odds, is one of the oldest and most successful squadrons of the Royal Air Force, with battle honours from many of the significant air campaigns of both World War I and World War II. During the First World War, the Squadron had many aces amongst its ranks such as James McCudden, Albert Ball, Reginald Hoidge and Arthur Rhys-Davids, developing a fierce reputation for the unit. In the Second World War, they fought in the Battle of Britain, and operated as