Dominion Police
The Dominion Police, although the federal police of Canada, was mainly active in the Eastern Canada region, while the Royal Northwest Mounted Police handled the expansive and sparsely populated Northwest Territories of Western Canada. In May 1918, the 969-member Dominion Police was reassigned under the Department of Militia and Defence and became a civilian wing of the Canadian Military Police Corps (CMPC). In the early 1900s, the Royal Northwest Mounted Police had declined as the Northwest Territories was divided into new provinces and territories, and due to the general unpopularity of the force for conduct during industrial disputes such as the Winnipeg General Strike. On 1 February 1920, the civilian members of the CMPC, including the Dominion Police, were merged with the Royal Northwest Mounted Police to form the Royal Canadian Mounted Police as the new federal police force of Canada, and the CMPC was disbanded on 1 December 1920.
Canadian Forces Military Police
Only trained soldiers were to be selected and they were required to serve a one-month probationary period before being transferred. Applicants were required to have exemplary service records. The CMPC School was formed at CFB Rockcliffe near Ottawa in June 1918. The first commanding officer of the school was Major Baron Osborne. The basic course was of three weeks duration. Upon successful completion of the course, Privates were promoted to Lance Corporal. The CMPC was disbanded on December 1, 1920. The Canadian Provost Corps (C Pro C) was formed on June 15, 1940, under the authority of Privy Council Order 67/3030. It originally consisted of No.1 Company (RCMP) and No. 2 Provost Company which was formed in early 1940 as part of the 2nd Canadian Infantry Division.