The Canadian Grenadier Guards (CGG) is a reserve infantry regiment in the 34 Canadian Brigade Group, 2nd Canadian Division, of the Canadian Army. The regiment is the oldest and second-most-senior infantry regiment in the Primary Reserve of the Canadian Army. Located in Montreal, its main role is the provision of combat-ready light infantry troops in support of Canadian regular infantry. It is a Household Foot Guard regiment and also provides soldiers for public ceremonial duties, performing similar ceremonial duties as the Guards regiments of the British Army. This primarily entails mounting the guard at Government House, the King's and Governor General's residence, and performing the "Changing the Guard" ceremony on Parliament Hill in Ottawa, a task it shares with Canada's senior Household Foot Guard regiment, the Governor General's Foot Guards of Ottawa. The Canadian Grenadier Guards is an allied regiment to the British Grenadier Guards.

The Canadian Army is the command responsible for the operational readiness of the conventional ground forces of the Canadian Armed Forces. It maintains regular forces units at bases across Canada, and is also responsible for the Army Reserve, the largest component of the Primary Reserve. The Army is headed by the Commander of the Canadian Army and Chief of the Army Staff, who is subordinate to the Chief of the Defence Staff. The Army is also supported by 3,000 civilian employees from the public service.