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
Invasion of Cuba (1741) forced to return to Britain in 1742. Invasion of Cuba (1741) The invasion of Cuba took place between 4–5 August and 9 December 1741 during the War of Jenkins' Ear. A combined army and naval force under the command of Admiral Edward Vernon and Major-General Thomas Wentworth arrived off Cuba and fortified positions around their landing site at Cumberland Bay. Despite facing no serious opposition, neither commander felt prepared to advance on the Spanish settlement at Santiago de Cuba. Harassed by guerrilla raids and with a mounting sick list, the British finally evacuated the island after several months of inactivity.