Perhaps the most significant battle took place in 1813 in Canada. Tecumseh and his warriors, deserted by the British forces, faced a pursuing army of Americans led by William Henry Harrison at the Battle of the Thames. As this confrontation became certain, Tecumseh promised his warriors that there would be no retreat. This battle, he felt, must be won in order to stop American westward expansion in all areas. But Tecumseh was mortally wounded, and his death and defeat marked the end of the native campaign to drive back white settlers. On a larger scale, the American victory cleared the way for the . claim to the native interior of North America with more treaty negotiations following, resulting in numerous removals of most of the eastern woodland Indian communities to the west.