North-West Mounted Police in the Canadian north
The history of the North-West Mounted Police in the Canadian north describes the activities of the North-West Mounted Police in the North-West Territories at the end of the 19th century and the start of the 20th. The mounted police had been established to control the prairies along the Canadian-United States border in 1873, but were then also deployed to control the Yukon region during the Klondike Gold Rush, and subsequently expanded their operations into the Hudson Bay area and the far north. The force was amalgamated in 1920 to form part of the new Royal Canadian Mounted Police, who continued their predecessors' work across the region.
RCMP Security Service
In 1950, the Royal Canadian Mounted Police's Special Branch was formally established to conduct its counterintelligence operations. Prior to that, the branch was a component of the RCMP's Criminal Investigation Branch, where political security operations and criminal investigations were not distinct before 1936. The Mounties carried out extensive security service work since the force was reconstituted in 1920, when it merged with the Dominion Police and became the federal police agency solely responsible for national security. Between the wars, this work was overwhelmingly directed at the Communist Party and labour and the left more generally.