The siege of Detroit, also known as the surrender of Detroit or the Battle of Fort Detroit, was an early engagement in the War of 1812. A British force under Major General Isaac Brock in cooperation with Indigenous warriors under Shawnee leader Tecumseh used bluff and deception to intimidate American Brigadier General William Hull into surrendering the fort and town of Detroit, the Michigan Territory, and his army which actually outnumbered the victorious British and Indigenous warriors.