The Final Invasion: Plattsburgh, the War of 1812's Most Decisive Battle

On September 1, 1814, under the command of Lt. Gen. Sir George Prevost, nearly 15,000 veteran British troops, fresh from victory over Napoleon, crossed the Canadian-American border—the largest foreign army ever to invade the United States.

Opposing the British invasion were Gen. Alexander Macomb and his army of fewer than 5,000 men and the improvised fleet and brilliant strategy of thirty-year-old Lt. Thomas Macdonough. They were on the losing side of a devastating war. By the time the Brit...