ESPRIT DE CORPS U.S. Marine Corps noncommissioned officers participate in an endurance course on Marine Corps Base Camp Lejeune, N.C., Oct. 11, 2013. Marines and sailors participated in the course to increase readiness and esprit de corps. The Marines and sailors are assigned to the 22nd Marine Expeditionary Unit. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 879579-U-JYJ78-373.jpg Photo Gallery