Attachment 3: 1977 Department of Defense 3-Digit Enlisted Occupational Classification System

SOURCE: Department of Defense, Manpower, Reserve Affairs and Logistics. Occupational Conversion Manual. Defense Manpower Data Center, Alexandria, VA, 1977. DOD 1312.1 DA PAM 611-11.

 "N.E.C." means "not elsewhere classified."

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INFANTRY, GUN CREWS AND SEAMANSHIP SPECIALISTS

Infantry
010
011
012

Infantry, General
Special Forces
Military Training Instructor

Armor and Amphibious
020

Armor and Amphibious, General

Combat Engineering
030

Combat Engineering, General

Artillery/Gunnery, Rockets and Missiles
041
042
043

Artillery and Gunnery
Rocket Artillery
Missile Artillery, Operating Crew

Air Crew
050
051

Air Crew, General
Pilots and Navigators

Seamanship
060
061
062
063

Boatswains
Navigators
Small Boat Operators
Seamanship, General

Installation Security
070

Security Guards

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ELECTRONIC EQUIPMENT REPAIRMEN

Radio/Radar
100
101
102
103
104

Radio/Radar, General
Communications, Radio
Navigation, Communication and Countermeasure, n.e.c.
Air Traffic Control Radar
Surveillance/Target Acquisition and Tracking Radar

Fire Control Electronic Systems (Non-missile)
111
112
113

Bomb - Navigation
Airborne Fire Control
Shipboard and Other Fire Control

Missile Guidance, Control and Checkout
121
122
123

Missile Guidance and Control
Missile Checkout Equipment, Test Equipment and Calibration
Torpedo

Sonar Equipment
130

Sonar, General

Nuclear Weapons Equipment
140

Nuclear Weapons Equipment Repair, General

ADP Computers
150

ADP Computers, General

Teletype and Cryptographic Equipment
160

Teletype and Cryptographic Equipment, General

Other Electronic Equipment
191
193
198

Training Devices
Shipboard Inertial Navigation Systems
Electronic Instruments, N.E.C.

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COMMUNICATIONS AND INTELLIGENCE SPECIALISTS

 
Radio and Radio Code
201
202
203

Radio Code
Non-Code Radio
Non-Radio Communications (Visual)

Sonar
210

Sonar Operator, General

Radar and Air Traffic Control
221
222

Radar
Air Traffic Control

Signal Intelligence/Electronic Warfare
230
231
232
233

Signal Intelligence/Electronic Warfare, General
Intercept (Code and Non-code)
Analysis
Electronic Countermeasures

Intelligence
241
242
243
244

Language Interrogation/Interpretation
Image Interpretation
Operational Intelligence
Counterintelligence

Combat Operations Control
250

Combat Operations Control, General

Communications Center Operations
260

Communications Center Operations, General

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MEDICAL AND DENTAL SPECIALISTS

Medical Care
300
301
302
303
304

Medical Care and Treatment, General
Operating Room
Mental Care
Therapy
Orthopedic

Technical Medical Services
311
312
313

Laboratory
Pharmacy
Radiology

Related Medical Services
321
322

Food Inspection and Veterinary Services
Preventive Medical Services

Dental Care
330
331

Dental Care, General
Dental Laboratory

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OTHER TECHNICAL AND ALLIED SPECIALISTS

Photography
400

Photography, General

Mapping, Surveying, Drafting, and Illustrating
411
412
413
414

Mapping
Surveying
Drafting
Illustrating

Weather
420

Weather, General

Ordnance Disposal and Diving
431
433

Explosive Ordnance Disposal/Underwater Demolition Team
Diver

Musicians
450

Musicians, General

Technical Specialists, N.E.C.
491
492
493
494
495
496

Physical Science Laboratory
Memorial Services and Embalming
Safety
Nuclear, Biological, Chemical Warfare Specialists
Firefighting and Damage Control
Other Technical Specialists and Assistants

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FUNCTIONAL SUPPORT AND ADMINISTRATION

Personnel
500
501

Personnel, General
Recruiting and Counseling

Administration
510
511
512
513

Administration, General
Stenography
Legal
Medical

Clerical/Personnel
520
521

Combined Personnel and Administration, General
First Sergeants and Sergeants Major

Data Processing
531
532

Operators/Analysts
Programmers

Accounting, Finance and Disbursing
541
542

Auditing and Accounting
Disbursing

Other Functional Support
551
552
553
554
555
556
557
558

Supply Administration
Unit Supply
Transportation
Postal
Aviation Maintenance Records and Reports
Flight Operations
Production and Quality Control
Functional Analysis

Religious, Morale and Welfare
561
562

Chaplain's Assistant
Recreation and Welfare

Information and Education
570

Information and Education, General

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ELECTRICAL/MECHANICAL EQUIPMENT REPAIRMEN

Aircraft and Aircraft Related
600
601
602
603
604

Aircraft, General
Aircraft Engines
Aircraft Accessories
Aircraft Structures
Aircraft Launch Equipment

Automotive
610
611
612

Automotive, General
Track Vehicle
Construction Equipment

Wire Communications
620
621
622
623

Wire Communications, General
Linemen
Central 0ffice
Interior Communications

Missile Mechanical and Electrical
631
632
633

Missile Engine
Missile Mechanic
Missile Launch and Support Facilities

Armament and Munitions
640
641
642
643
644
645
646
647

Armament Maintenance, General
Small Arms Repair
Artillery Repair
Turret Repair
Nuclear Weapons Maintenance and Assembly
Ammunition Repair
Aviation Ordnance
Mines and Degaussing

Shipboard Propulsion
651
652

Main Propulsion
Auxiliaries

Power Generating Equipment
661
662

Nuclear Power
Electric Power

Precision Equipment
670

Precision Equipment, General

Other Mechanical and Electrical Equipment
690

Other Mechanical and Electrical Equipment, General

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CRAFTSMEN

Metalworking
700
701
702
703
704

Metalworking, General
Welding
Machinist
Sheetmetal
Metal Body Repair

Construction
710
711
712
713

Construction, General
Steelworking
Woodworking
Construction Equipment Operation

Utilities
720
721

Utilities, General
Electrician

Lithography
740

Lithography

Industrial Gas and Fuel Production
750

Industrial Gas and Fuel Production, General

Fabric, Leather and Rubber
760

Fabric, Leather, and Rubber, General

Other Craftsmen, N.E.C.
790

Other Craftsmen, N.E.C., General

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SERVICE AND SUPPLY HANDLERS

Food Service
800
801

Food Service, General
Stewards and Enlisted Aides

Motor Transport
811
812

Motor Vehicle Operators
Railway Operators

Material Receipt, Storage, and Issue
821
822
823

Missile Fuel and Petroleum
Warehousing and Equipment Handling
Sales Store

Law Enforcement
830
831
832

Law Enforcement, General
Corrections
Investigations

Personal Services
840

Laundry and Personal Service, General

Auxiliary Labor
850

Auxiliary Labor, General

Forward Area Equipment Support
860

Forward Area Equipment Support, General

Other Services, N.E.C.
870

Other Services, General

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NON-OCCUPATIONAL

Patients and Prisoners
901
902

Patients
Prisoners

Officer Candidates and Students
911
912

Cadets and Other Officer Candidates
Students

Undesignated Occupations
920

Undesignated Occupations, General

Not Occupationally Qualified
950

Not Occupationally Qualified, General

 
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