Gen. Robert Magnus, former Assistant Commandant of the Marine Corps, closes his eyes as he enjoys a final concert by the U.S. Marine Drum and Bugle Corps at his retirement ceremony at Marine Barracks Washington, July 17. - Gen. Robert Magnus, former Assistant Commandant of the Marine Corps, closes his eyes as he enjoys a final concert by the U.S. Marine Drum and Bugle Corps at his retirement ceremony at Marine Barracks Washington, July 17.