U.S. Marine Corps Dictionary

School of Infantry

The MOS school for the Infantry career field. SOI East is at Camp Lejeune, NC and SOI West is at Camp Pendleton, CA. Every Marine graduating from boot camp at either Parris Island, SC or San Diego, CA goes next to SOI. New Marines who have not been assigned an 0300 (Infantry MOS) report to Marine Combat Training for four weeks of intensive training in combat weapons and techniques because “Every Marine is a Rifleman.” After MCT they are sent to their MOS school. New Infantry Marines report to the School of Infantry’s Infantry Training Battalion for MOS training. In addition, SOI operates an Advanced Infantry Training company to teach NCOs basic combat leadership skills as well as a Staff Non-Commissioned Officer’s Academy.

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DevilDogCorps.com is an unofficial online dictionary of terms and acronyms commonly used within the United States Marine Corps.