INDENTD.F.C. London Gazette 11.2.1944. Acting Flight Lieutenant, No. 224 Squadron. The recommendation states -- "This officer has a most outstanding operational record. He has completed 3 tours of duty and is now engaged on a fourth. In daylight sorties over enemy territory, he has been attacked 10 times by fighters and on four occasions has flown back to base in aircraft, severely damaged in long and strenuous combats. Since joining his present squadron, he has taken part in 22 anti-submarine patrols and has with his captain made 3 attacks on U-boats. Flight Lieutenant Aust is an extremely capable wireless operator/air gunner who has also filled the post of squadron signals leader with great success."

D.F.M. London Gazette 28.7.1942. Flight Sergeant, No. 59 Squadron. The recommendation states -- "This airman has been engaged on operational flying since May, 1940. He served in France and took part in several sorties whilst his squadron was based there. Since then as wireless operator/air gunner has been of a high standard. On 2 occasions, when his aircraft was intercepted by an enemy fighter his well directed fire drove off the attacker each time."

Flight Lieutenant Leslie Roy Aust, D.F.C., D.F.M., served with 59 Squadron as Flight Sergeant wireless operator/air gunner in Blenheims and Hudsons operating mainly off the Dutch Belgian and French coasts June 1941 -- April 1942; commissioned Pilot Officer May, 1942, Flight Lieutenant May, 1944; his Liberator failed to return from a Channel patrol 6/7 June 1944 and subsequently reported "presumed killed in action"