Marine Corps Enlisted Job Descriptions

MOS 0311 -- Rifleman

United States Marine Corps
Amy Willard/Flickr

"Every Marine is a Rifleman" has been the mantra of the United States Marine Corps since there have been Marines fighting wars.  Though it does not mean that every Marine has the MOS 0311 of the actual rifleman, it does mean the every Marine - from food specialists to logistics personnel - have been trained in the basics of being a rifleman.  The Marine Corps built the entire service around the training and support of the Infantry Rifleman.


All non-infantry personnel (POGS - People Other than Grunts - a term 'affectionately' used by the Infantry) will attend basic infantry skills at the USMC School of Infantry (SOI) in a separate infantry training program called the Marine Combat Training (MCT).  Being able to pick up a weapon and defend yourself and your fellow Marines when needed is more what the phrase "Every Marine is a Rifleman" means.

The Infantry MOSs attend the actual SOI Infantry Training Battalion (ITB).  This is where the MOS0311 Rifleman learns the skills to operate within an Infantry Unit.  This Infantry MOS is earned through the ITB school and will be the primary military occupational specialty (PMOS) of the Marine finishing ITB.

Rank Range: Sgt to Pvt

Job Description: The riflemen employ the M4 service rifle, the M203 grenade launcher and the M249 squad automatic weapon (SAW), AT-4s, and M72 Light Anti-Tank Weapon (LAW) rockets.

 The riflemen learn to be the primary scouts, assault troops, and close combat forces available to the Marine Air-Ground Task Force (MAGTF). The riflemen are the foundation of the Marine infantry organization, and as such are the nucleus of the fire team in the rifle squad, the scout team in the LAR squad, scout snipers in the infantry battalion, and reconnaissance or assault team in the reconnaissance units.

Non-commissioned officers are assigned as fire team leaders, scout team leaders, rifle squad leaders, or rifle platoon guides.

Job Requirements:

(1) Must possess a GT score of 80 or higher.

(2) Complete the Marine Rifleman Course at the! School of Infantry, East or West.

Duties: For a complete listing of duties and tasks, refer to NAVMC Directive 3500.87, Training and Readiness Manual.

Related Department of Labor Occupation Codes :

Combat Rifle Crewmember.

Related Marine Corps Jobs:

(1) Machine Gunner, 0331

(2) Infantry Assaultman, 0351.

The Weapons / Rifle Company within the USMC Battalion, Infantry Regiment, Marine Division, Fleet Marine Force is made up of three rifle platoons and one weapons platoon.  The MOS 0311 are part of the rifle platoon and soul mission is to locate, close with, and destroy the enemy by fire and maneuver, or to repel his assault by fire and close combat.  This is the job description of the USMC Infantry Rifleman MOS 0311.  So, out of the hundreds of jobs in the USMC, as you read their job descriptions, they are obviously not Riflemen, but all Marines have the basic skills to do the “rifleman” job – as long as they stay proficient if these skills.

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