US Marine Corps Job Description & Qualification Factors

Field 21, Ordnance

Marines with India Battery, the artillery attachment for Battalion Landing Team 1st Battalion, 2nd Marine Regiment, 24th Marine Expeditionary Unit, fire a 120 mm towed mortar system, called the Expeditionary Fire Support System here, May 17, during Exercise Eager Lion 12. Eager Lion 12 is taking place throughout the month of May and is designed to strengthen military-to-military relationships of more than 19 participating partner nations. This is the second major exercise for the 24th MEU who, along with the Iwo Jima Amphibious Ready Group, is currently deployed to the U.S Central Command area of operations as a theater security and crisis response force.
••• U.S. Marine Corps / Sgt. Robert Fisher
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Rod Powers was the U.S. Military expert for The Balance Careers and was a retired Air Force First Sergeant with 22 years of active duty service.
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Rod Powers
Updated February 08, 2019

The Ground Ordnance Maintenance OccFld assures the MARFOR that serviceable ordnance materials are available. Duties include the inspection, repair, and maintenance of most weapon systems possessed by marine corps units. Qualifications required include basic ordnance administration and knowledge, the capability to technically inspect/analyze an ordnance item and repair/fabricate the same, and to understand and implement repair shop/armory operational procedures. The requirement also exists to impart technical knowledge to organizational personnel, crews, and supervisors for proper preventive maintenance, inspections, and application. Ground Ordnance Maintenance personnel will be required to learn Ground Ordnance Maintenance administrative procedures, repair analysis, technical inspection procedures, repair procedures, testing of ordnance equipment, and quality control methodology. Types of entry/level jobs available include armorer, artillery repairer, assault amphibious vehicle/tank/optical/laser/small missile repairer/machinist. Marines entering this OccFld will receive MOS 2100, Basic Ground Ordnance Maintenance Marine.

Below are the Marine Corps Enlisted Military Occupation Specialties which are organized under this occupational field:

2111 – Small Arms Repairer/Technician

2112 – Precision Weapons Repairer/Technician

2131 – Towed Artillery Systems Technician

2141 – Assault Amphibious Vehicle (AAV) Repairer/Technician

2146 – Main Battle Tank (MBT) Repairer/Technician

2147 – Light Armored Vehicle (LAV) Repairer/Technician

2148 – Expeditionary Fighting Vehicle (EFV) Repairer/Technician

2149 – Ordnance vehicle maintenance chief

2161 – Machinist

2171 – Electra-Optical Ordnance Repairer

2181 – Senior Ground Ordnance Weapons Chief