San Carlos, and McCerea in distance. Fort Barrancas. Headquarters 13th Coast Artillery Corps. Located 9 miles southwest of Pensacola on Pensacola Bay, opposite the harbor entrance. Reached by paved highway and by the Bay Shore Line of the Gulf Power Company. Normal strength 500 officers and enlisted men. Trains annually 2,500 officers and men in the summer training camps. Fort San Carlos. Located adjacent to Fort Barrancas. Original structure built in 1696. Present Structure built in 1781.