The U.S. Army employed Civil War–era skirmishers at the head of the advancing columns. Three of four of the U.S. soldiers who had volunteered to act as skirmishers walking point at the head of the American column were killed, including Hamilton Fish II (grandson of Hamilton Fish, the Secretary of State under Ulysses S. Grant), and Captain Allyn K. Capron, Jr., whom Theodore Roosevelt would describe as one of the finest natural leaders and soldiers he ever met. Only Oklahoma Territory Pawnee Indian, Tom Isbell, wounded seven times, survived.