A number of flags and banners are used by the Canadian Forces to signify loyalty, nationality, units, and/or specific events. One used throughout the military is the Royal Union Flag, which was approved by the federal parliament in 1964 for "continued use as a symbol of Canada's membership in the Commonwealth of Nations and of her allegiance to the Crown." This flag however, is generally flown only on specified days and whenever instructed by National Defence headquarters. Others symbolise royal and viceroyal figures or royal honours bestowed on a unit or regiment. The finial capping the tip of a flag pole carrying the Queen's Canadian standard, governor general's standard, Queen's Colours, or other royal banners must be in the form of the crest of the Royal Arms of Canada.