Soldiers with The Old Guard, 3rd U.S. Infantry Regiment, stand at the Tomb of the Unknown Solider in Arlington National Cemetery, Va., on the Army's 235th Birthday, June 14, 2010. Soldiers with The Old Guard, 3rd U.S. Infantry Regiment, stand at the Tomb of the Unknown Solider in Arlington National Cemetery, Va., on the Army's 235th Birthday, June 14, 2010. SHARE: Download: Full Size (3.66 MB) Tags: Photo Essays Credit: VIRIN: 862091-K-JTW60-828.jpg Photo Gallery