A Commonwealth Realm is a country which has The Queen as its Monarch. There are 15 Commonwealth Realms in addition to the UK.
Antigua and Barbuda attended their first Commonwealth Games in Kingston, Jamaica in 1966, but did not become members of the Commonwealth until 1981.
All naval vessels of the Royal Canadian Navy are named with the prefix HMCS, 'Her Majesty's Canadian Ship'.
Grenada's Kirani James won his country's first ever Olympic gold medal at the London games of 2012.
The Queen's Royal style and title in Antigua and Barbuda is Elizabeth the Second, by the Grace of God, Queen of Antigua and Barbuda and of Her other Realms and Territories, Head of the Commonwealth.