At the start of the Second World War Dring completed several portrait commissions for the
War Artists' Advisory Committee, WAAC. In early 1942 he resigned from Southampton School of Art to work on a full-time contract for the Committee, specialising in Admiralty portraits. He travelled extensively within Britain at this time, painting subjects in Portsmouth, Scotland and the
Western Approaches. In the late summer of 1943 he was given a second full-time contract which included more general subjects. His final war-time contract with WAAC saw Dring working on portraits for the
Air Ministry throughout 1944 and 1945. Sixty-four of Drings war-time portraits, mostly pastels are in the collection of the
Imperial War Museum, who also hold five oil paintings by him. There are a further forty of his wartime works at the
National Maritime Museum, mostly pastel portraits. ==Later life==