"North American Mustang Mk I of the Air Fighting Development Unit at Duxford, Cambridgeshire, February 1942." Mustang Mark I, AG365, of the Air Fighting Development Unit, on the ground at Duxford, Cambridge. This aircraft subsequently saw much operational service with Nos. 613, 169, 26 and 239 Squadrons RAF, and then flew with No. 41 Operational Training Unit until 1947.