 In the immediate post-war years, Fighter Command squadrons were in residence at Martlesham but the proximity to Ipswich and the physical limitations on lengthening the runways restricted jet operation.In an effort to improve the station the main runway was extended in 1955.Early in 1946, the Bomb Ballistics and Blind Landing Unit moved in which, in 1950, was rechristened the Armament and Instrument Experimental Unit (A&IEU) remaining at Martlesham until disbanding in 1957.