Siege of Fort Mackinac
1812 CE.
Shown on the map at 45.861°, -84.631°.
The Capture of Fort Mackinac was one of the first engagements of the War of 1812. A British and Native American force captured the island soon after the outbreak of war between Britain and the United States. Encouraged by the easy British victory, more Native Americans rallied to their support. Their cooperation was an important factor in several British victories during the remainder of the war.
Text from the Wikipedia article Siege of Fort Mackinac, licensed CC BY-SA 4.0.