First Reinforcement Company, Seaforth Highlanders of Canada reinforcements at the Toronto Traiining Depot at the Canadian National Exhibition (CNE), Toronto, February, 1940. This photo is rolled up. CONFIRM THAT THERE MAY BE AN ORIGINAL OF THIS PHOTO. During the Second World War, as during the First World War, the CNE grounds became home to detachments of the Canadian military. In 1939, the Royal Canadian Air Force moved into the Coliseum. The Canadian Army took over the Horse Palace and the Royal Canadian Navy converted the Automotive Building into HMCS York. During the summers of 1940 and 1941, most of the troops stationed at the CNE were re-located. Those troops remaining either continued their regular administrative duties or participated in CNE displays and events aimed at promoting the Canadian war effort. CNE officials had hoped to continue the annual fair throughout the years of the war. In the spring of 1942, however, the CNE agreed to turn the grounds over to the Canadian military for use year-round. During the military occupation of the grounds, virtually every CNE building, large or small, was put to use by the Canadian armed forces. The CNE grounds remained closed and under the control of the Canadian military until 1946. Between 1945 and 1946, Exhibition Park acted as a demobilization centre for returning soldiers.