February to 7 March 1977; she made a brief visit, between 12 and 20 October 1981, following a Commonwealth Heads of Government Meeting (CHOGM) in Melbourne; marked the centennial of the New Zealand Police during a tour from 22 February to 2 March 1986; the Queen closed the Commonwealth Games in Auckland and, with her son, Prince Edward, took part in events marking the sesquicentennial of the Treaty of Waitangi between 1 and 16 February 1990; between 1 and 10 November 1995, she attended the CHOGM in Auckland and opened the newly refurbished parliament buildings; and, as part of her global tour for her Golden Jubilee, Elizabeth was in New Zealand from 22 to 27 February 2002. Some of the royal tours undertaken by more junior members of the royal family include the 1990 visit of Princess Anne to commemorate the 75th anniversary of the Gallipoli landings on Anzac Day, and when Prince William represented the Queen of New Zealand at VE and VJ Day commemorations in 2005, as part of an 11-day tour, and opened the new Supreme Court of New Zealand building in early 2010. Prince Edward spent two terms of the 1982 academic year as a house tutor and junior master at the Wanganui Collegiate School. Apart from New Zealand, the King and his family regularly perform public duties in the other 14 Commonwealth realms of which he is head of state. This situation can mean members of the royal family will be promoting one nation and not another. On some occasions Queen Elizabeth II had represented the United Kingdom, while her governor-general represented New Zealand, with both in attendance at the same event. The Crown and the Defence Force The Crown sits at the pinnacle of the New Zealand Defence Force. The governor-general is commander-in-chief and under the Defence Act 1990 is authorised to "raise and maintain armed forces", consisting of the New Zealand Army, Royal New Zealand Navy, and Royal New Zealand Air Force. The sovereign's position as head of the Defence Force is reflected in New Zealand's naval vessels bearing the prefix His Majesty's New Zealand Ship (Her Majesty's New Zealand Ship in the reign of a female monarch), and in the requirement that all members of the armed forces swear their allegiance to the sovereign and his or her heirs and successors. The governor-general commissions officers to command the forces. Though the monarch