Fort Trenholm is one of many Confederate artillery emplacements built to protect Charleston Harbor, Charleston, South Carolina, from attack by Union forces. Built in 1864 in a last ditch effort to shore up Charleston's defenses, Fort Trenholm is located on Johns Island in the harbor, is three acres in size and has emplacements for 17 artillery pieces.
Trenholm, located on Johns Island in Charleston Harbor, Charleston, South
Carolina, was built in 1864 by Confederate forces under the direction of
General P.G.T. Beauregard, in an effort to reinforce Fort Pringle and
strengthen the defenses of Charleston Harbor.
fort is named for George A. Trenholm. Trenholm was a cotton planter, Union
blockade runner and Secretary of the Treasury for the Confederate States of
America during the last year of the Civil War.
Trenholm is situated on the opening to the Stono River. While built to
reinforce Fort Pringle, it was also situated so that is could defend against a flanking
movement against the James Island artillery batteries by land forces on Johns
is of earthen construction with one open face adjoining marsh land. Its
fortified eastern face opens on the Stono River and runs 870 feet. The southern
face covers 780 feet and its western face runs 885 feet. At its base, the
parapet is 45 feet thick and 15 feet tall.