The airfield was used by many units of the Royal Air Force (RAF), mainly as a training facility between 1918 and 1950 [REF].
At the outbreak of World War II, RAF Upper Heyford was the home to units of RAF Bomber Command, specifically No. 18 and No. 57 (Bombing) Squadrons, forming No. 70 (Bomber) Wing of No. 2 (Bombing) Group.