During the Second World War, the exhibition grounds became Toronto's main military training grounds. The CNE, and virtually all other non-military uses of the lands ceased. The CNE was not held between 1942 and 1946, when the land and its facilities were turned over to the Department of National Defence as a training ground. The Graphic Arts Building housed Red Cross facilities, the Coliseum became the RCAF Manning Depot, the Horse Palace was used for barracks and the Automotive Building became the shore facility HMCS "York" for the Royal Canadian Navy. After World War II, the buildings were used as a demobilization centre. The CNE would resume again in 1947, as the Canadian military returned the grounds back to its civilian administrators.