What's After Boot™: School of Infantry

SOI: School of Infantry

All graduates of Marine Corps recruit training attend the School of Infantry (SOI). At SOI, they will train with one of two training battalions, either MCT or ITB. All non-infantry Marines attend training at Marine Combat Training Battalion (MCT), while infantry Marines (all Marines with a Military Occupational Specialty (MOS) of 03xx) attend training at Infantry Training Battalion (ITB).

MCT: Marine Combat Training

All non-infantry Marines, upon completion of recruit training, will undergo Marine Combat Training (MCT). MCT consists of 29 days of battle skills training that enables Marines, regardless of MOS, to operate in a combat environment.

ITB: Infantry Training Battalion

Infantry Training Battalion's (ITB) mission is to train and qualify infantry Marines in the Military Occupational Specialty (MOS) of 0311 Riflemen, 0331 Machinegunner, 0341 Mortarman, 0351 Assaultman, 0352 Anti-tank Guided Missileman, or 0313 Light Armored Vehicle (LAV) Crewman. ITB consists of a 59 day 0311 course that must be completed by all infantry Marines regardless of specific MOS. Upon completion of the 0311 course, all Marines with the 0311 MOS report directly to the Security Forces or Operational Forces of the Marine Corps.


January 29, 2014: Camp Pendleton, Calif. - Marines training to be machine gunners break up their ammunition into different lengths before starting a sequence of fire on range 218A in the 53-area of Camp Pendleton, California. The Marines are students with Delta Co., Infantry Training Battalion, School of Infantry-West and are training to be basically qualified in the 0331 MOS. Infantry Training Battalion trains all infantry, entry-level Marines in the infantry skills essential to operating in a combat environment. Infantry Training Battalion is a 52-day training course that transforms the raw Marine into an infantryman who can fight, survive, and win in a combat situation.
—USMC photo by Cpl. Orrin G. Farmer

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