The Conanicut Battery is a colonial and 20th century military battery in Jamestown, Rhode Island, west of Beaver Tail Road. The site offers a commanding view of the West Passage of Narragansett Bay. During the American Revolutionary War, local militia constructed an earthen battery on the site. The British occupied Jamestown later that year and took over the site, occupying the space until August 1778 when the French fleet arrived. Its principal surviving feature is an earthworks measuring about 150 feet (46 m) long and 75 feet (23 m) wide. The site is marked by a plaque placed by the Daughters of the American Revolution in 1931. During the early 20th century, the U.S. military built large partially underground defensive batteries in the area, notably Fort Getty and Fort Burnside.