The regiment embarked for England on 20 October 1806, and remained in Britain until the outbreak of the war with the United States in 1812. The 19th were one of three British regular cavalry units that served in North America during the War of 1812, and the only one to serve in Canada. (The 14th Light Dragoons served on campaign in New Orleans but had no horses, The 6th Inniskilling Dragoons served on the East coast of the United States.) The regiment's first three squadrons arrived at Quebec City in May 1813 and were mounted on horses procured in Lower Canada.