A Marine with 3rd Battalion, 6th Marine Regiment advances down range during a battalion exercise at Camp Lejeune, N.C., Dec. 10, 2015. The battalion-wide exercise reinforced basic infantry skills and brought junior Marines up to optimal operability across the companies. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released) - A Marine with 3rd Battalion, 6th Marine Regiment advances down range during a battalion exercise at Camp Lejeune, N.C., Dec. 10, 2015. The battalion-wide exercise reinforced basic infantry skills and brought junior Marines up to optimal operability across the companies. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released)