In 1952, upon her accession to the throne, Queen Elizabeth II was recognised as the Head of the Commonwealth and Head of State to 15 of its realms.
The Queen's father George VI was the first head of the Commonwealth, a new global organisation that was founded following India's independence in 1947 and their decision to remain affiliated with Britain. This umbrella of nations acknowledged their heritage as part of the British Empire even if they weren't ruled by the British Crown. Her Majesty took it upon herself to keep her father's Commonwealth intact.
And so began a liftetime of travelling, one that would make any air-mile collector emerald green with jealousy, but one that would in many ways define our Queen...
Film: Queen in India