Major-General Sir Isaac Brock was a British Army officer and administrator from Guernsey, Britain. Brock was assigned to Lower Canada in 1802. He was promoted to major general, and became responsible for defending Upper Canada against the United States.Brock's Detroit victory earned him a knighthood and the nickname "The Hero of Upper Canada. On August 16, 1812, Brock led a force of regulars and First Nations warriors, with the help of Tecumseh, a leader of the Shawnee, in the successful capture of Fort Detroit by creating the illusion of a much larger Canadian force. Major General William Hull had invaded Upper Canada in July, but withdrew to Fort Detroit. Brock found out about serious dissension in Hull's ranks and his increasing fear of defeat. Brock met Tecumseh and the two became allies. Brock led his troops and the Shawnee warriors across the Detroit River. Brock’s officers urged Brock to let his officers precede him and he refused because he would never ask his men to go where he would not lead them. He was hoping Hull would back down and he did. Without consulting anyone, Hull ordered the gunners not to fire, and surrendered. Brock won a completely unexpected victory with the capture of an American army, fort, and territory. This changed the mood of defeatism in Upper Canada to optimism that the troops, militia and Aboriginal allies could defend the province. Brock continued to strengthen Upper Canada after Detroit in preparation for an American assault on the Niagara frontier. The first major American attack occurred at Queenston Heights on October 13, 1812.When the Americans invaded again at Queenston Heights, Brock quickly rode to the village. Almost as soon as he arrived, the Americans seized a gun battery on the heights. Brock decided to do a direct attack immediately, without waiting for reinforcements. This time, his calculated risk did not pay off. As he led his troops, Brock was hit in the chest by a shot from an American soldier and died instantly. In the end, the British recaptured the heights, won the battle and took 925 American soldiers as prisoners.Brock was buried at Fort George, but was moved in 1824 to the summit of Queenston Heights, where a monument was erected in his honor. The original monument was destroyed in 1840, but replaced in 1853, and is Canada’s highest monument at 50 meters or 164 feet.