Fort Hughes was built by the Philippine Department of the U.S. Army on Caballo Island in the Philippines in the early 1900s. The fort, which part of the Harbor Defenses of Manila and Subic Bays, was named for Major General Robert Patterson Hughes, a veteran of the American Civil War, Spanish–American War, and the Philippine–American War.
Fort Hughes was armed with 14-inch (356 mm) M1910 guns like these shown firing at Fort MacArthur, San Pedro, California in 1931.
The fort had several 12-inch (305 mm) mortars sited at Battery Craighill
Harbor Defenses of Manila and Subic Bays
The Harbor Defenses of Manila and Subic Bays were a United States Army Coast Artillery Corps harbor defense command, part of the Philippine Department of the United States Army from circa 1910 through early World War II. The command primarily consisted of four forts on islands at the entrance to Manila Bay and one fort on an island in Subic Bay.
The harbor of Manila and surrounding areas
12-inch (305 mm) mortars of Battery Way, Fort Mills in 2007.
12-inch (305 mm) gun on a disappearing carriage, generally similar to other 10-inch through 14-inch disappearing batteries.
Fort Drum. Temporary wooden barracks on the fort's deck are visible near the fire control tower.