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 Digby control at RAF Coleby Grange and RAF Wellingore. The first squadron scrambled from Digby was No. 46 Squadron on 3 September; told there was an incoming German raid they found nothing and returned. October 1939 saw a number of arrivals at the station. On 10 October No. 611 Squadron RAF flying Supermarine Spitfires and No. 229 Squadron RAF operating Bristol Blenheims arrived at Digby. Initially, No. 611 Squadron flew affiliation exercises with the other two squadrons and with other new arrivals No. 44 Squadron RAF and No. 144 Squadron RAF, who were both equipped with Hampden light bombers. At the