Marine Corps (USMC) Enlisted Job Descriptions

OCCUPATIONAL FIELD 03, INFANTRY

Capabilities - Naval oriented expeditionary warriors of final resort providing maximum versatility in chaotic and uncertain conditions of crisis and conflict.

Infantry Marines are trained in core competencies of gunnery on infantry weapons, combat operations, and battlefield awareness; employing a variety of weapons, and through communications links, supporting arms including artillery, naval gunfire, and close air support; sea-based, projecting onto vital littorals in any climate or place.

They are capable of the full spectrum of combat, day or night, against opposing forces with a full spectrum of capabilities, including NBC; using maneuver warfare to locate, close with, and destroy the enemy by fire and maneuver; either on foot or mounted on trucks, assault vehicles, assault craft, or vertical assault aircraft.

Infantry Marines are able to secure and defend self and vital terrain by repelling the enemy's assault by fire, maneuver, and close combat; cultivated in a leadership continuum that develops the basic warrior through experience and coaching into a fully qualified noncommissioned officer and staff noncommissioned officer, a combat leader of Marines who trains and directs the actions of Marines in teams, sections, squads, and platoons, while coordinating with higher and adjacent units and supporting units.

 

Primary MOS's
MOS	Job Title	Authorized Ranks
0311	Rifleman	Sgt to Pvt
0313	LAV Crewman	Sgt to Pvt
0321	Machine Gunner	Sgt to Pvt
0341	Mortarman	Sgt to Pvt
0351	Assaultman	Sgt to Pvt
0352	Antitank Assault Guided Missileman	Sgt to Pvt
0369	Infantry Unit Leader	MGySgt to SSgt