The Battle of Queenston Heights was the first major battle in the War of 1812. Resulting in a British victory, it took place on 13 October 1812 near Queenston, Upper Canada (now Ontario). The battle was fought between United States regulars with New York militia forces, led by Major General Stephen Van Rensselaer, and British regulars, York and Lincoln militia and Mohawk warriors, led by Major General Isaac Brock and then Major General Roger Hale Sheaffe, who took command after Brock was killed.