Son of James Anderson Duff and Winifred Duff. Of South Africa.
LG Sup 30 September 1941 pg. 5650 - "One night in September, 1941, this officer was the captain of an aircraft detailed to attack a target at Turin. On the outward journey, it became apparent that, owing to a technical fault, it was not possible to use the fuel in the reserve petrol tank. In spite of the long and difficult flight ahead, Pilot Officer Duff decided to continue his mission and, by skilful control of his engines, thus conserving his fuel, was able to reach and bomb his objective and return safely to base. On a previous occasion, Pilot Officer Duff successfully searched for a dinghy some eighty miles from the English coast. He flew over the position for three hours, until he was relieved. This officer has carried out thirty operational missions and has displayed exceptional ability, keenness and courage throughout"