Seavey's Island side of Seavey's Island at the former site of Camp Long, a stockade named for Secretary of the Navy John Long, where 1,612 prisoners of war from the Battle of Santiago de Cuba were confined from July 11 to mid-September 1898 during the Spanish–American War. Camp Heywood, a Marine camp named after Colonel Charles Heywood, was located just north of the naval prison. It was occupied after the 1st Battalion's return from Cuba in late August until September 21, 1898. According to the National Trust for Historic Preservation, the Portsmouth Naval Shipyard has 62 buildings listed on the National Register
USS Santiago de Cuba (1861) covered them as they reluctantly reembarked the next day, under orders of General Benjamin F. Butler, the army commander. Porter immediately began work organizing a new invasion force. The union warships and Army transports returned to the vicinity of Wilmington in mid-January 1865. After a bloody three-day fight, Fort Fisher fell on the 15th. The next day, "Santiago de Cuba" embarked men wounded in the battle and sailed for Norfolk, Virginia. During the Civil War, the following crewmen of the USS "Santiago de Cuba" were awarded the Medal of Honor: Before the war ended, "Santiago de Cuba" was the steamship