AT ATTENTION U.S. Army Gen. Stanley A. McChrystal stands at attention during his retirement ceremony at Fort Lesley J. McNair in Washington, D.C., July 23, 2010. McChrystal retired from the U.S. Army after 34 years of service to his nation during both peace and war time. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 776055-Z-JBD58-966.jpg Photo Gallery