Fort Johnson was a military fortification located on James Island, South Carolina. Built in the early 18th century, it served as a strategic point during the American Revolutionary War and the Civil War. The fort was named after the colonial governor of South Carolina, Sir Nathaniel Johnson, and played a role in various military operations. Today, Fort Johnson is part of the Fort Johnson Historic District and is recognized for its historical significance. The site includes remnants of the original fort and is often studied for its role in early American military history. Visitors can learn about the fort's past and its impact on local and national events.