On August 16, 1812, Brock led a combined force of British regulars, Canadian militia, and Native American warriors in an attack on the American Fort Detroit. The Americans were caught by surprise and surrendered without a fight. Brock's victory at Detroit gave the British control of the entire Michigan Territory.
Battle of Queenston Heights
On October 13, 1812, Brock led another attack on the Americans, this time at Queenston Heights near Niagara Falls. The Americans were again surprised and driven back. However, Brock was killed in the battle. His death was a major blow to the British cause in the War of 1812.
In addition to these two major battles, Brock also led a number of smaller engagements during the War of 1812. He was a skilled and courageous leader, and his death was a great loss to the British.