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
Society of the Army of Santiago de Cuba to whom in the absence of lineal descendants the right of inheritance to one (1) membership may be devised by decedent members. Members by inheritance shall include those who are lineal male descendants of any officer or enlisted man now deceased who was killed or died of wounds received or disease contracted in the line of duty in the Santiago campaign and who, had he survived, would have been eligible to membership. Honorary membership shall be conferred upon all duly accredited Military and Naval Attaches of foreign governments who were present on land in Cuba with the Fifth Army Corps