The Oxford Times of 26 September 1914 reported that Tom Winfield had enlisted with Kitchener's New Army. The Soldiers of Oxfordshire website gives him the Service No. 14520 with the OBLI, and mentions Salonika. He would have served in either 7th or 8th (Service) Battalion, which was stationed in Salonika, Greece, for much of the war. He was gazetted (page 528) on 9 January 1920 as having been Mentioned in Dispatches.