The Battle of Windsor was a short-lived campaign in the eastern Michigan area of the United States and the Windsor area of Upper Canada. A group of men on both sides of the border, calling themselves "Patriots", formed small militias in 1837 with the intention of seizing the Southern Ontario peninsula between the Detroit and Niagara Rivers and extending American-style government to Canada. They based groups in Michigan at Fort Gratiot (present Port Huron), Mount Clemens, Detroit, and Gibraltar. The Patriots were defeated by British and American government forces, respectively. Beginnings In December 1837, Thomas Jefferson Sutherland was commissioned by the rebellion leaders on Navy Island in the Niagara River to head to Detroit to raise a force there. After the Navy Island base was evacuated, other Patriots came to Detroit. Public meetings were held in Detroit and an invasion force was organized. Men came to Detroit from as far away as Illinois and Kentucky to join the movement.<ref>"The Patriot War of 1837–1838: Locofocoism With a Gun? ", Andrew Bonthius, Labour/Le Travail, No. 52, Fall 2003</ref> Concerned that they would seize the U.S. arsenal at Fort Gratiot, U.S. General Hugh Brady ordered the weapons removed by boat. The steamship, however, became stuck in the ice at St. Clair, Michigan, and the journey to Detroit had to be completed by wagon. On January 5, 1838, the Detroit jail was raided and the Patriots seized the 450 muskets which had been stored there to keep them away from the rebels. The rebels were reported to have later stolen another 200 weapons from the unsecured office of the U.S. marshal in Detroit, perhaps with his help. Schooner Ann The schooner Ann was seized by the Patriots on January 8 and sailed to Gibraltar, Michigan. The governor of Michigan, Stevens T. Mason, along with a detachment of 200 militiamen, pursued them in two steamships. A hundred Canadian militia also followed in the steamer Alliance. Mason met with the Patriot leaders at Gibraltar, but the captured steamship Ann continued on to near Fort Malden on the Canadian shore. On January 9, the Patriots began shelling Malden and the town of Amherstburg from the Ann. The Canadian militia took up positions in the town while the Patriots moved 300 men onto the Canadian Bois Blanc Island opposite the town. The Canadian militia opened fire on the schooner when it tried to reach the island. The Canadians