The Ceremonial Guard (CG) is an ad hoc military unit in the Canadian Forces that used to draw principally from two Primary Reserve (militia) regiments of Foot Guards: The Governor General's Foot Guards from Ottawa and the Canadian Grenadier Guards from Montreal. However, since 2007 the Ceremonial Guard has been manned by a more pan–Canadian Forces approach: Royal Canadian Navy, Canadian Army and Royal Canadian Air Force personnel. Every summer, the Ceremonial Guard performs the Changing the Guard ceremony on Parliament Hill and posts sentries at Rideau Hall, the residence of the Governor General of Canada, and the National War Memorial.