Honoring the Fallen on Memorial Day Published May 25, 2018 DoD News, Defense Media Activity Arlington Honors Flags placed by soldiers assigned to the 3d U.S. Infantry Regiment, known as the "Old Guard" honor America's fallen heroes at Arlington National Cemetery, Va., May 24. 2018. Army photo by Spc. Lane Hiser) Photo Details / Download Hi-Res Flags placed by soldiers assigned to the 3d U.S. Infantry Regiment, known as the "Old Guard" honor America's fallen heroes at Arlington National Cemetery, Va., May 24. 2018. Army photo by Spc. Lane Hiser)