Changing of the Guard A soldier assigned to the 3rd U.S. Infantry Regiment, known as “The Old Guard,” conducts the changing of the guard at the Tomb of the Unknown Soldier at Arlington National Cemetery in Arlington, Va., Oct. 1, 2020. SHARE: Download: Full Size (1.46 MB) Tags: army Credit: Elizabeth Fraser, Army VIRIN: 201001-A-IW468-469M.JPG Photo Gallery