233rd BIRTHDAY From left: Army Chief of Staff Gen. George Casey, Army Secretary Pete Geren and the Sgt. Maj. of the Army Kenneth Preston sing the Army song before cutting the Army's birthday cake at the 2008 Army Birthday Ball in Washington D.C., June 14, 2008. The United States Army turned 233 years old and marked the occasion with celebrations around the world. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 280991-C-SQZ85-155.jpg Photo Gallery