Unknown Soldier U.S. Army Chief of Staff Gen. Mark A. Milley, and Army Secretary Dr. Mark T. Esper participate in a full-honors wreath-laying ceremony at the Tomb of the Unknown Soldier in honor of the U.S. Army’s 244th birthday at Arlington National Cemetery in Arlington, Va., June 14, 2019. SHARE: Download: Full Size (1.68 MB) Tags: DoD Credit: Elizabeth Fraser, Army Command Sgt. Maj. VIRIN: 190614-A-IW468-251C.JPG Photo Gallery