In 1812, the war had widened to include the United States of America. In the following year, the 13th Foot left Martinique for Quebec, from whence they proceeded to protect the frontiers of Upper Canada. The regiment crossed the Saint Lawrence River and took part in minor actions around Plattsburgh and Lake Champlain. The war concluded in 1815, and the 13th Foot returned to England in July of that year.