The South Alberta Light Horse traces its beginnings to the period of the Riel Rebellion of 1885. During this conflict The Rocky Mountain Rangers of Fort Macleod with 150 officers and men were tasked with the protection of the area ranging from the U.S. border to High River and from the Rockies to Medicine Hat. The RMR saw no action during their three months of existence during the rebellion, and the SALH carries the battle honour "North West Canada, 1885" on their colours.