The official history of the Royal Navy began with the formal establishment of the Royal Navy as the national naval force of the Kingdom of England in 1660, following the Restoration of King Charles II to the throne. However, for more than a thousand years before that there had been English naval forces varying in type and organization. In 1707 it became the naval force of the Kingdom of Great Britain after the Union between England and Scotland which merged the English navy with the much smaller Royal Scots Navy, although the two had begun operating together from the time of the Union of the Crowns in 1603.