Dominion Police
The Dominion Police Force was the federal police force of Canada between 1868 and 1920, and was one of the predecessors of the Royal Canadian Mounted Police. It was the first federal police force in Canada, formed the year following the Canadian Confederation to enforce federal laws and perform policing duties for the Federal Government of Canada. On 1 February 1920, the Dominion Police was merged with the North-West Mounted Police to form the Royal Canadian Mounted Police as the new federal police force of Canada.
Cavalry Staff Corps
Mounted police continued to be used on an ad-hoc basis from 1855 but were formally re-established in 1877 as the Military Mounted Police. This was supplemented by the Military Foot Police in 1882 and these two units are the direct antecedents of the modern Royal Military Police.