The regiment was established in 1808 by the Prince Regent and future king of Portugal, John VI, with the duty of protecting the Portuguese royal family, which had sought refuge in Brazil during the Napoleonic wars. However dragoons had existed in Portugal since at least the early 18th century and, in 1719, units of this type of cavalry were sent to Brazil, initially to escort shipments of gold and diamonds and to guard the Viceroy who resided in Rio de Janeiro (1st Cavalry Regiment – Vice-Roy Guard Squadron). Later, they were also sent to the south to serve against the Spanish during frontier clashes. After the proclamation of Brazilian independence, the title of the regiment was changed to that of the Imperial Honor Guard, with the role of protecting the Imperial Family. The Guard was later disbanded by Emperor Peter II and would be recreated only later in the republican era.