Who captured Detroit during the War of 1812?

Discover Canada records this moment in one decisive sentence. The guide writes: In July, Major-General Sir Isaac Brock captured Detroit but was killed while defending against an American attack at Queenston Heights, near Niagara Falls, a battle the Americans lost. The man the test wants is the only commander named for capturing Detroit: Major-General Sir Isaac Brock.

The capture took place in July 1812, the same month after the United States invasion described by Discover Canada in the previous sentence: "Believing it would be easy to conquer Canada, the United States launched an invasion in June 1812. The Americans were mistaken." Brock's success at Detroit was the early confirmation of that line — within weeks of the American invasion, a major American military post had fallen to a British–Canadian–First Nations coalition that included "Shawnee led by Chief Tecumseh."

Brock's death is part of the same caption. Discover Canada reports that he "was killed while defending against an American attack at Queenston Heights, near Niagara Falls, a battle the Americans lost." The guide later returns to him alongside Chief Tecumseh: a separate caption refers to "Major-General Sir Isaac Brock and Chief Tecumseh" as figures who, together, defended Canada against the American invasion. So Brock's role at Detroit is the start of a longer story that ends at Queenston Heights — capture in July, death soon after, and a posthumous reputation as one of the named heroes of Discover Canada's account of the War of 1812.

The question is a direct name-and-rank check. Discover Canada uses the full title — Major-General Sir Isaac Brock — when introducing him, so the test answer uses the full title too. New citizens are expected to recognise the person, the rank, and the role together.

Other answer choices each appear in Discover Canada in different contexts: Lieutenant-Colonel John Graves Simcoe founded York and was Upper Canada's first Lieutenant Governor in the 1790s — decades before Detroit; Lieutenant-Colonel Charles de Salaberry commanded French Canadiens at Châteauguay in 1813, not Detroit; and the American commander does not match either, since the question asks who captured Detroit, not who lost it.