In April 1898 the Spanish–American War broke out, with Fort Moultrie's smaller, rapid-fire batteries still years from completion. Batteries Logan and Bingham were added to the fort, mostly equipped with weapons purchased from the United Kingdom. In 1901 Battery McCorkle was added to defend the minefield against minesweepers with three 3-inch guns on retractable masking parapet carriages. In 1905 Battery Lord was added with two 3-inch guns, and in 1906 Battery Gadsden provided four 6-inch rapid-fire disappearing guns. These batteries were supplemented in 1899 by a pair of 12-inch guns at Fort Sumter. Forts Moultrie and Sumter constituted the Coast Defenses of Charleston, as the Charleston Coast Artillery District was designated in 1913. Battery Capron was named for Captain Allyn K. Capron of the 1st US Volunteer Cavalry, the famous "Rough Riders", who was the first US Army officer killed in the Spanish–American War. Battery Butler was named for Colonel Pierce M. Butler of the Palmetto Regiment, killed in the Battle of Churubusco in the 1847 Mexican–American War. Battery Jasper was named for Sergeant William Jasper of the 2nd South Carolina Regiment, a hero of the 1776 attack on the fort. Battery Thompson was named for Colonel William Thompson of the 3rd South Carolina Regiment, commended for defending Charleston in June 1776. Battery Gadsden was named for Brigadier General Christopher Gadsden, a South Carolina officer of the Revolutionary War. Battery Logan was named for Captain William Logan, killed fighting the Nez Perce in 1877. Battery Bingham was named for 2nd Lieutenant Horatio Bingham, killed fighting the Sioux in 1866. Battery McCorkle was named for 1st Lieutenant Henry McCorkle of the 25th US Infantry Regiment, killed in the Battle of El Caney in the Spanish–American War. Battery Lord was named for Assistant Surgeon George Edwin Lord, killed at the Battle of the Little Big Horn, also called "Custer's Last Stand", in 1876. In 1904 Battery Logan's 6-inch Armstrong gun was removed and most likely transferred to Fort Adams. After the US entered World War I, Battery Gadsden's four 6-inch guns were removed for service on field carriages on the Western Front in 1917 and were never returned to the fort. Records show the guns arrived in France, but a history of the Coast Artillery in World War I states that none of the regiments in France equipped with 6-inch guns completed training in time to see action before the Armistice. Two