Marines with Marine Combat Training Battalion, School of Infantry - West, conduct two live-fire ranges on Marine Corps Base Camp Pendleton, California. At MCT, Marines have to learn how to shoot, move and communicate as part of a unit or squad. The mission is to give Marines a foundational understanding of leadership and the basic tenets of maneuver warfare.
(U.S. Marine Corps video by Lance Cpl. Melissa I. Ugalde)
Source: U.S. Marine Corps (video statements)