U.S. Marines attending the Infantry Unit Leaders Course (IULC) at the Advanced Infantry Training Battalion, School of Infantry-East (SOI-E) navigate through the Infantry Platoon Battle Course at Fort Pickett, V. A., supported by infantry Marines from the 1st Battalion of the 8th Marines, Aug. 26, 2013. IULC is a course designed for Marine infantry staff noncommissioned officers that prepares them for the rigors of being a platoon sergeant in an infantry platoon. (U.S. Marine Corps photo by Chief Warrant Officer 2 Paul S. Mancuso, Combat Camera, SOI-E/Released)