[1] At the start of the First World War, the 18th Mounted Rifles was one of six cavalry regiments from across Western Canada to provide detachments to help form the 6th Battalion (Fort Garrys), CEF for service in the first contingent of the Canadian Expeditionary Force.
On 22 September 1915, the 1st Regiment, CMR disembarked in France where it fought as part of the 1st Brigade, Canadian Mounted Rifles.
[4] On 15 March 1920, as a result of the Otter Commission, the regiment was redesignated as The Manitoba Mounted Rifles.
[9] This active service unit would later be redesignated as the 18th (Manitoba) Armoured Car Regiment and finally as the 18th Armoured Car Regiment (12th Manitoba Dragoons)[9][10] where it served directly under the II Canadian Corps serving in Northwest Europe until VE Day.
[2][3] On 1 December 1954, the 67th Light Anti-Aircraft Regiment (Manitoba Mounted Rifles) and the 118th Medium Battery, RCA were amalgamated under the latter unit's name.