Warfighting

Marines with 1st Battalion, 24th Marine Regiment, 4th Marine Division, prepare ammunition for the M240B machine gun for a live fire and maneuver range during their annual training exercise on Camp Grayling, Mich., Aug. 18, 2020. The training and readiness manual establishes standards, regulations and policies regarding the training of Marines to ensure they can go, fight, and win our nation’s battles. (U.S. Marine Corps photo by Lance Cpl. Leslie Alcaraz)