Choosing Your Career Path

Marine Occupation Field
The Marine Corps Occupational System uses a four-digit number code constructed on the concept that occupations with similar skill and knowledge requirements are grouped in functional areas, known as OccFld s (OccFlds), and jobs, known as Military Occupational Specialties (MOSs); which provide for the most efficient and effective classification, assignment, and utilization of Marine Corps personnel. The occupational system identifies Marine Corps personnel duties, skill attributes, and requirements within the specific functional areas.

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OccFlds are identified by the first two digits of the four-digit code and a descriptive title. The OccFld is a grouping of related MOSs. Criteria to be considered in establishment of an OccFld include the total number of Marines in the OccFld, the number of MOS (diversity), combat or combat support requirements, rotation base, unity of functional management, and training requirements.

The following is a list of Marine Officer OccFlds:

• OccFld 01: -   PERSONNEL AND ADMINISTRATION
• OccFld 02: -   INTELLIGENCE
• OccFld 03: -   INFANTRY
• OccFld 04: -   LOGISTICS
• OccFld 05: -   MARINE AIR GROUND TASK FORCE PLANS
• OccFld 06: -   COMMAND AND CONTROL SYSTEMS
• OccFld 08: -   FIELD ARTILLERY
• OccFld 11: -   UTILITIES
• OccFld 13: -   ENGINEER, CONSTRUCTION, FACILITIES, AND EQUIPMENT
• OccFld 18: -   TANK AND ASSAULT AMPHIBIOUS VEHICLE
• OccFld 21: -   GROUND ORDNANCE MAINTENANCE
• OccFld 23: -   AMMUNITION AND EXPLOSIVE ORDNANCE DISPOSAL
• OccFld 25: -   OPERATIONAL COMMUNICATIONS
• OccFld 26: -   SIGNALS INTELLIGENCE/GROUND ELECTRONIC WARFARE
• OccFld 27: -   LINGUIST
• OccFld 28: -   GROUND ELECTRONICS MAINTENANCE
• OccFld 30: -   SUPPLY ADMINISTRATION AND OPERATIONS
• OccFld 31: -   TRAFFIC MANAGEMENT
• OccFld 33: -   FOOD SERVICE
• OccFld 34: -   FINANCIAL MANAGEMENT
• OccFld 35: -   MOTOR TRANSPORT
• OccFld 40: -   DATA SYSTEMS
• OccFld 41: -   MARINE CORPS EXCHANGE
• OccFld 43: -   PUBLIC AFFAIRS
• OccFld 44: -   LEGAL SERVICES
• OccFld 46: -   VISUAL INFORMATION
• OccFld 55: -   MUSIC
• OccFld 57: -   NUCLEAR, BIOLOGICAL, AND CHEMICAL
• OccFld 58: -   MILITARY POLICE AND CORRECTION
• OccFld 59: -   ELECTRONICS MAINTENANCE
• OccFld 60: -   AIRCRAFT MAINTENANCE
• OccFld 63: -   AVIONICS
• OccFld 65: -   AVIATION ORDNANCE
• OccFld 66: -   AVIATION LOGISTICS
• OccFld 68: -   METEOROLOGICAL AND OCEANOGRAPHIC SERVICES
• OccFld 70: -   AIRFIELD SERVICES
• OccFld 72: -   AIR CONTROL/AIR SUPPORT/ANTIAIR WARFARE/AIR TRAFFIC CONTROL
• OccFld 73: -   NAVIGATION OFFICER AND ENLISTED FLIGHT CREWS
• OccFld 75: -   PILOTS/NAVAL FLIGHTOFFICERS
• OccFld 96: -   1SPECIAL EDUCATION PROGRAM
• OccFld 9700 and 9900: -   IDENTIFYING AND REPORTING MOSs