War of 1812: British troops captured Fort Peter in St. Marys, Georgia, in the only battle of the war to take place in the state.

The War of 1812 was fought by the United States and its allies against the United Kingdom and its allies in North America. It began when the United States declared war on Britain on 18 June 1812. Although peace terms were agreed upon in the December 1814 Treaty of Ghent, the war did not officially end until the peace treaty was ratified by the United States Congress on 17 February 1815.

The Battle of Fort Point Peter was a successful attack in early 1815 by a British force on a smaller American force on the Georgia side of the St. Marys River near St. Marys, Georgia. The river was then part of the international border between the United States and British-allied Spanish Florida; it now forms part of the boundary between Georgia and Florida. Occupying coastal Camden County allowed the British to blockade American transportation on the Intracoastal Waterway. The attack on Forts St. Tammany and Peter occurred in January 1815, after the signing of the Treaty of Ghent, which would end the War of 1812, but before the treaty's ratification. The attack occurred at the same time as the siege of Fort St. Philip in Louisiana and was part of the British occupation of St. Marys and Cumberland Island.

St. Marys is a city in Camden County, Georgia, United States, located on the southern border of Camden County on the St. Marys River in the state's Low Country. It had a population of 18,256 at the 2020 census, up from 17,121 at the 2010 census. It is part of the Kingsland, Georgia Micropolitan Statistical Area. The Florida border is just to the south across the river, Cumberland Island National Seashore is to the northeast, and Kingsland, Georgia, is to the west. Jacksonville, Florida, is 38 miles south, and Savannah, Georgia, is 110 miles north.