U.S. Marines with the Infantry Unit Leader Course, Advanced Infantry Training Battalion, School of Infantry - West, fire M252 81mm mortar systems aboardMarine Corps Base Camp Pendleton, California, June 25, 2020. The Infantry Unit Leader Course trains Marines to serve platoon sergeants for the various types of small units they may lead while serving with an infantry battalion. (U.S. Marine Corps video by Lance Cpl. Anthony Alvarez)
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