Harbor Defenses of Manila and Subic Bays
…Manila. From circa 1905 to 1915 the following forts were built: Fort Mills (Corregidor), Fort Hughes (Caballo Island), Fort Drum (El Fraile Island), and Fort Frank (Carabao Island) at the entrance to Manila Bay, as well as Fort Wint (Grande Island) at the entrance to Subic Bay. The forts were designed for one…