The first action at the dawn of the Civil War was when South Carolina took control of Fort Johnson.
The fort served an important defensive role during early Colonial America but did not have any significance prior to or during the Civil War. It was the site of the first raising of the South Carolina state flag in 1775 and where Fort Sumter was fired on. The magazine was built in 1765 and is a brick structure that measures 27 feet long and 20 feet wide. The fort was buried by Confederate soldiers during the Civil War and dug up in 1931.