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.
North-West Mounted Police
When the Second Boer War broke out in 1899, many members of the mounted police wanted to volunteer to serve in South Africa, motivated by sympathy for the British imperial cause and the strong military tradition within the force. Indeed, Commissioner Herchmer had proposed sending a force of 350 men to join the Sudan campaign in 1896, but was turned down by his superiors. Although there was public enthusiasm for a Canadian military response, at first it appeared that only a minimal deployment would be needed, and it was only after several British defeats that an offer of a more substantive force was welcomed by London. The Canadian government turned to the mounted police as their main source for experienced mounted soldiers, and members were given leave from the force for the duration of their service. Combined with the pressures of maintaining the commitments in the Yukon, this reduced the number of the police in the remaining territories to only 682 men by 1900.