About Military Occupational Specialties

The U.S. Army used alphanumeric codes (e.g., 11B10, Light Weapons Infantryman) to identify the Military Occupational Specialty (job) each person held. The MOS that a person was qualified in was called the PMOS (primary MOS), while the DMOS (duty MOS) was the job they actually held at a given time.

Different MOS coding systems were used for enlisted, warrant officers and officers:

Enlisted codes consisted of five digits. The first three (e.g., 11B) indicated the position while the fourth and fifth indicated the relative level:xxx10 - basic Infantryman (E1-E3) = 11B10 xxx20 - specialist (Specialist 4th Class, E-4) = 11B20 (Note: some SP5s were 20s, e.g., 63B20, 91B20, 94B20)xxx30 - team leader, specialist (E-5) = 11B30 (A number of SP5 positions had "30" MOS codes, including 64C30).xxx40 - noncommissioned officer (Sergeant E-5, Staff Sergeant E-6, Sergeant First Class E-7) = 11B40xxx50 - senior noncommissioned officer (E-8, E-9) = 11B50 (or, as we shall see, 11B5M, first sergeant)

Where the individual held a Special Qualification Identifier (SQI) for special training or skills, the last character was an alphabetic SQI Code that indicated the qualification (e.g., in 11B1P. the "P" indicates "parachutist")

Warrant Officer MOS Codes were also 5 digits, but the first four (e.g., 631A) indicated the position, with the last available for an SQI suffix.

Commissioned Officer codes were numerical; four digits indicated MOS (e.g., 1542, Infantry Officer) and an optional one digit SQI prefix indicated a special qualification (e.g., 71542, Jump-qualified Infantry Officer).

The U.S. Army changed the MOS coding structure sometime in the 1980s, so the MOS codes which we held are now part of history. While MOS codes can be useful especially when visiting the Wall or searching through the casualty database, they can be fairly hard to find these days.

Vietnam-era MOS Codes

00, 000, 0000 000 General Military Duty

0001 Duties Unassigned0002 General Officer

0003 "Relieved From Duty, Sick in Hospital or Quarters"0005 ROTC Officer Awaiting Entry On Active Duty0006 Student Officer0009 Special Assignment001A Unqualified in Authorized Warrant Officer MOS002A Patient0030 Postal Officer0030 Sports Specialist003A Student004A Duties Unassigned or In Transit00B Diver00C Dog Trainer00D Special Duty Assignment00E Recruiter And Career Counselor00F Drill Sergeant00G Target Aircraft Crewman00H Enlisted Aide00J Club/Community Activities Manager00U Race/Relations/Equal Opportunity Specialist00Z Command Sergeant Major01B Electrical-Electronic Engineering Assistant01C Mechanical Engineering Assistant01D Civil Engineering Assistant01E Mathematics Statistics Assistant01F Physical Sciences Assistant01G Chemical Engineering Assistant01H Biological Sciences Assistant01K Personnel Psychology Specialist01L Audit Specialist0205 Communications & Electronics Staff Officer0213 Post Communication Electronics Officer021A Club Manager0220 Area Signal Center Officer0221 Communications Center Officer02B Band Member Coronet Or Trumpet Player02C Band Member Baritone Or Euphonium Player02D Band Member French Horn Player

02E Band Member Trombone Player02F Band Member Tuba Player02G Band Member Flute Or Piccolo Player02H Band Member Oboe Player02J Band Member Clarinet Player02K Band Member Basoon Player02L Band Member Saxaphone Player02M Band Member Percussion Player02N Band Member Piano Player02P Brass Group Leader02Q Woodwind Group Leader02R Percussion Group Leader02S Special Band Member02T Band Member Guitar Player02Z Bands Senior Sergeant0300 Fixed Plant Signal Unit Commander031A Bandmaster031C No occupational title data available03B Performing Arts Specialist03C Physical Activities Specialist03D Arts And Crafts Specialist03Z Recreation Specialist03Z Special Services Senior Sergeant0405 Telephone-Digital Communications Officer0425 Cable Communications Officer04B Translator-Interpreter04C Expert Linguist0505 Radio Systems Officer051A Veterinary Services Technician052A Non-Morse Intercept Technician053A Special Identification Technician0590 Radio Controlled Target Airplane Officer05B Radio Operator05C Radio Teletype Operator05D EW/SIGINT Identifier05E Voice-Radio Operator05F Radio Teletypewriter Operator

05G Signal Security Specialist05H EW/SIGINT Morse Interceptor05K EW/SIGINT Non-Morse Interceptor0600 Motor Officer0605 Nurse Anesthetist0609 Highway Transport Planning Officer0612 Field Transportation Officer0615 Highway Traffic Engineer061C "Airplane Pilot, Multi-engine"062B "Helicopter Pilot, Utility and Light Cargo Single Rotor"062C "Helicopter Pilot, Utility and Light Cargo Tandem Rotor"062D "Helicopter Pilot, Medium Transport"0660 Highway Transport Officer0663 Engineer Equipment Officer0668 Amphibious Craft Officer0692 Transportation Officer0693 Transportation Traffic Management Officer0694 Transportation Movements Officer0706 Trainmaster0715 Railway Maintenance-Of-Way Superintendent0716 Railway Bridge & Building Supervisor0717 Railway Track Supervisor0718 Railway Signal Maintenance Supervisor0720 "Road Foreman, Railroad Locomotives"0730 Yardmaster0735 Railway Master Mechanic0736 Railway Car Foreman0737 Enginehouse Foreman0740 Railway Dispatcher0750 Railway Operations Superintendent0753 Railway Car Service Superintendent0754 Railway Equipment Superintendent0801 Harbor Master0804 Cargo Officer0815 Port Operations Officer0820 Dredge Master0823 Dredge Engineering Officer

0825 Harbor Craft Unit Commander09B Basic Trainee09C Basic Trainee09D College Trainee09E Wac Trainee09F Chaplain's Assistant (Catholic)09G Chaplain's Assistant (Protestant)09H Chaplain's Assistant (Jewish)09S Commissioned Officer Candidate09W Warrant Officer Candidate

10, 100, 1000 100B Utility/Observation Helicopter Pilot100C Cargo Helicopter Pilot100D Heavy Lift Helicopter Pilot100E Attack Helicopter Pilot100F "Pilot, OH-6"100G "Pilot, OH-58"100P "Pilot, U-8"100Q Combat Service/Support Fixed Wing Pilot100R Combat Surveillance Fixed Wing Pilot100Z "Pilot, Nonstandard Aircraft"1010 Combat Signal Unit Commander101B "Fixed Wing Pilot, Single Engine"101C "Fixed Wing Pilot, Multi-engine"101D "Fixed Wing Pilot, Surveillance Aircraft"102A Rotary and Fixed Wing Pilot103A Aviation Technician1111 Safeguard Unit Commander1115 Safeguard Staff Officer1154 Field Artillery Target Acquisition Officer1174 Light Air Defense Artillery Unit Commander1176 Composite Aaa Unit Commander1177 "Air Defense Missile Staff Officer, Nike Hercules"1178 "Air Defense Missile Staff Officer, Hawk"1180 Air Defense Missile Unit Commander1181 Guided Missile Systems Officer1183 Reconnaissance & Survey Officer1190 Ballistic Missile Unit Commander

1193 Field Artillery Unit Commander1198 Field Illumination Unit Commander11B Infantryman11C Indirect Fire Infantryman11D Armor Reconnaissance Specialist11E Armor Crewman11F Infantry Operations And Intelligence Specialist11G Infantry Senior Sergeant11H Infantry Direct Fire Crewman11Z Infantry Senior Sergeant1203 Tank Unit Commander1204 Armored Reconnaissance Unit Commander1210 Armored Combat Command Commander12A Pioneer12B Combat Engineer12C Bridge Crewman12D Combat Engineer Operation And Intelligence NCO12D Power Bridge Specialist12E Atomic Demolition Munitions Specialist12F Combat Engineer Tracked Vehicle Crewman12Z Combat Engineer Senior Sergeant1328 Engineer Construction Unit Commander1330 Armored Engineer Unit Commander1331 Combat Engineer Unit Commander1342 Portable Bridge Unit Commander1367 Amphibious Engineer Unit Commander13A Field Artillery Basic13B Cannon Crewmember13C Heavy Field Artillery Crewman13D Field Artillery Rocket Crewman13E Cannon Fire Direction Specialist13F Automatic Weapons Crewman13Z Field Artillery Senior Sergeant1415 Chemical Combat Support Unit Commander1542 Infantry Unit Commander1543 Infantry Heavy Mortar Unit Commander1560 Infantry Unit Commander (Mechanized)

15B Sergeant Missile Crewman15C CORPORAL Missile Crewman15D Lance Crewmember/MLRS Sergeant15E PERSHING Missile Crewmember15F HONEST JOHN Rocket Crewmember15F REDSTONE Missile Crewman15J MLRS/Lance Operations/Fire Direction Specialist15Z FA Missile Rocket Senior Sergeant1690 Military Intelligence Unit Commander1691 Army Cryptologic & Electronic Warfare Unit Commander16B HERCULES Missile Crewmember16C HERCULES Fire Control Crewmember16D HAWK Missile Crewmember16E HAWK Fire Control Crewmember16F Light Air Defense Artillery Crewmember16H Air Defense Artillery Operations/Intelligence Assistant16J Forward Area Alerting Radar Operator16K Fire Distribution Systems Crewman16M Safeguard Operations and Intelligence Specialist16P CHAPARRAL Crewmember16R VULCAN Crewmember16Z Air Defense Artillery Senior Sergeant17A Combat Surveillance And Target Acquisition Crewman17B Field Artillery Radar Crewmember17C Field Artillery Target Acquisition Specialist17D Flash Ranging Crewman17E Field Illumination Crewman17F Defense Acquisition And Survival Radar Crewman17G Tracking Radar Crewman17H Fire Distribution System Crewman17J Drone Aircraft Crewman17K Ground Surveillance Radar Crewman17L Aerial Sensor Specialist17M Remote Sensor Specialist17Z Combat Surveillance And Target Acquisition NCO1980 Fixed Wing Aviation Unit Commander1981 Rotary Wing Aviation Unit Commander

1982 Airfield Commander1984 Supply Plans Officer1985 Supply Research & Development Officer1987 Composite Aviation Unit Commander

20, 200, 2000 2010 Chief of Staff2011 Secretary of The General Staff2015 Congressional Liaison Officer2019 Post Commander201A Meteorology Technician2025 Major Departmental Unit Chief or Director202A Biomedical Equipment Repair Technician2030 Aide-De-Camp2040 Test & Evaluation Officer2110 Adjutant or Adjutant General211A Target Acquisition Radar Technician2120 Administrative Officer212B "Field Artillery Missile Assembly Technician, Corporal"2136 Nontactical Unit Officer213B "Field Artillery Missile Fire Control Technician, Corporal"2145 WAC Staff Adviser214C "Field Artillery Missile System Technician, LaCross"214D "Field Artillery Missile System Technician, Redstone"214E "Missile System Technician, Pershing"214F Field Artillery Missile System Technician (Sergeant)2162 "Operations & Training Staff Officer (G3, S3)"2163 "Air Operations Officer (G3, S3)"2167 Research & Development Coordinator2170 Technical Operations Officer2180 "Civil-Military Operations Staff Officer (G5, S5)"21A Ballistic Missile Repair Apprentice21B REDSTONE Electronic Mechanic21C REDSTONE Guidance Repairman21D REDSTONE Test Instrument Repairman21E Sergeant Guidance Repairman21F Sergeant Test Station Repairman21G PERSHING Electronics Materiel Specialist21H PERSHING Guidance And Control Repairer

21J PERSHING Test Equipment Repairman21K PERSHING Computer Repairman21L PERSHING Electronic Repairer21M PERSHING Digital Equipment Repairer21R Sergeant Firing Set Repairman21S Sergeant Missile Guidance Repairman21T Sergeant Test Equipment Repairman21U Sergeant Maintenance Chief21V PERSHING Maintenance Chief2200 Personnel Officer2210 Personnel Management Officer221B "Missile Assembly Technician, Nike"221C "Missile Maintenance Technician, Safeguard"222B "Missile Fire Control Technician, Nike"2239 Psychological Assistant223C Air Defense Missile System Technician (Hawk)223D "Air Defense Missile System Technician, Improved Hawk"224B Chaparral-Vulcan Systems Technician225B ADA Command and Control Maintenance Technician2260 "Personnel Staff Officer (G1, S1)"2265 Manpower Control Officer226B Missile Site Radar Maintenance Technician226C Perimeter Acquisition Radar Manitenance Technician22A Electronic Repair Apprentice22B CORPORAL Electronics Mechanic22C CORPORAL Missile Repairman22F HURCULES Electronics Mechanic22G NIKE Launcher System Repairman22H NIKE Internal Guidance Repairman22J HAWK Missile Launcher Mechanic22K HAWK Missile-Launcher Repairer22L NIKE-HURCULES Test Equipment Repairer22M NIKE Missile Repairman22N NIKE-HURCULES Missile-Launcher Repairer2310 Recruiting & Induction Officer231A Air Defense Artillery Fire Control Maintenance Technician232A Fire Control Radar Technician

2330 Labor Relations Officer2334 Selective Service Officer2350 Race Relations/Equal Opportunity Officer23B CORPORAL Fire Control Mechanic23C CORPORAL Fire Control Repairman23G NIKE-HURCULES Fire Control Mechanic23M NIKE Acquisition Radar Repairman23N NIKE-HURCULES Track Radar Repairer23P HAWK Fire Control Mechanic23Q HAWK Fire Control Repairer23R HAWK Continuous Wave Radar Mechanic23S HAWK Pulse Radar Repairer23T HAWK Continuous Wave Radar Repairer23U NIKE-HURCULES High Power Radar Simulator Repairer23V HAWK Maintenance Chief23W NIKE Maintenance Chief2401 "ADP Officer, PCM"2402 ADP Officer241B "Field Artillery Missile System Repair Technician, Corporal"241C "Field Artillery Missile System Repair Technician, LaCross"241D "Field Artillery Missile System Repair Technician, Redstone"241E "Field Artillery Missile Systems Repair Technician, Sergeant"241F "Field Artillery Missile Systems Repair Technician, Pershing"2420 Archivist2421 Military Historian2430 Memorial Activities Officer24B HAWK Continuous Wave Radar Mechanic24C HAWK Firing Section Mechanic24D HAWK Missile Launcher Mechanic24E HAWK Fire Control Mechanic24F HAWK Fire Control Mechanic24G HAWK Information Coordination Central Mechanic24H HAWK Fire Control Repairer24J HAWK Pulse Radar Repairer24K HAWK Continuous Wave Radar Repairer24M VULCAN System Mechanic24N CHAPARRAL System Mechanic

24P Defense Acquisition Radar Mechanic24Q NIKE-HURCULES Fire Control Mechanic24U NIKE-HURCULES Custodial Mechanic24V HAWK Maintenance Chief2500 School Commandant2510 Adviser Group Commander/Senior Adviser (Reserve Component)2517 Professor of Military Science2518 Aviation Staff Officer251B "Air Defense Missile System Repair Technician, Nike"251C "Air Defense Missile System Repair Technician, Hawk"251D "Air Defense Missile System Repair Technician, Improved Hawk"2520 Training Officer252A Test Measuring and Diagnostic Equipment Support Technician2548 Training Aids Officer25B Automatic Data Link Repairman25C Integrated Data Link Repairman25D Birdie Repairman25E Radar Tracking Station Repairman25F Radar Display Equipment Repairman25G Mobil Adcp Monitor Repairman25H Radar Data Processing Equipment Repairman25J Operations Central Repairer25K AN/TSQ-51 System Repairer Maintenance Chief260A Nuclear Weapons Technician2610 Management Analyst2615 Organization & Equipment Planning Officer261A Special Ammunition Maintenance Technician2622 Training Center Unit Officer2624 Logistical Commander2625 Logistics Officer262A Nuclear Weapons Electronic Technician2640 Troop Movements Officer26B Weapons Support Radar Repairer26C Target Acquisition Surveillance Radar Repairer26D Ground Control Approach Radar Repairer26E Airborne Sensor Specialist26F Ground Radar Repairman

26G Ground Control Approach Radar Repairman26H Air Defense Radar Repairer26J Defense Acquisition Radar Mechanic26K Aerial Early Warning/Defense Equipment Repairer26K Electronic Warfare Equipment Repairman26L Tactical Microwave Systems Repairer26M Airborne Surveillance Radar Repairer26N Aerial Surveillance Infrared Repairer26P Radio Propogation Specialist26T Radio/TV Systems Specialist26U Unattended Ground Sensor Systems Repairman26V Strategic Microwave Systems Repairer26W Radar Maintenance Supervisor-Inspector26Y Satellite Communications Equipment Repair2701 Nonmilitary Subjects Instruction Officer (Designated Subject)2715 Military Leadership Instructor271A Land Combat Missile Systems Repair Technician2720 Civil Defense Officer2728 Military College Faculty Member27A Missile Systems Apprentice27B Land Combat Support System (LCSS) Test Specialist27C Combat Missile Systems Repairman27D Lance Missile System Repairman27E TOW/Dragon Missile Electronics Repairer27F VULCAN Repairer27G CHAPARRAL/REDEYE Repairer27H Shillelagh Repairer27Z Land Combat/air Defense Systems Maintenance Chief2800 Comptroller2801 "Comptroller Staff Officer, Army General Staff"281A Radio Repair Technician282A Radar Repair Technician283A Electronic Warfare Repair Technician284A Television Repair Technician285A Electronic Warfare/Intercept Equipment Repair Technician286A Communications-Electronics Equipment Repair Technician28B Missile Site Radar Repairman

28C Safeguard Digital Repairman28D Perimeter Acquisition Radar Electronic Repairman28M Anti-Ballistic Missile Maintenance Specialist28N Safeguard Missile Site Radar Specialist28P Safeguard Perimeter Acquisition Radar Specialist28Q Safeguard Data Processing System Maintenance Specialist28R Safeguard Dps Peripheral Equipment Maintenance Specialist2900 Headquarters Unit Commander2910 Service Company Commander

30, 300, 3000 3000 Executive Medicine Officer3004 Nuclear Medical Officer3005 Preventive Medicine Officer3006 Occupational Medicine Officer3012 Health Care Administrator301A Data Processing Equipment Repair Technician3100 General Medical Officer3101 Pulmonary Disease Officer3105 Gastroenterologist3107 Cardiologist3108 Obstetrician & Gynecologist3111 Urologist3112 Dermatologist3113 Allergist/Clinical Immunologist3115 Anesthesiologist3116 Pediatrician3117 Pediatric Cardiologist3118 Child Neurologist3125 Ophthalmologist3126 Otorhinolaryngologist3127 Child Psychiatrist3128 Neurologist3129 Psychiatrist3130 Adolescent Psychiatrist3131 Neurosurgeon3132 Hematologist3134 Nephrologist3135 Medical Oncologist

3136 Endocrinologist3137 Rheumatologist3138 Clinical Pharmacologist3139 Internist3140 Infectious Disease Officer3141 Family Physician3150 General Surgeon3151 Thoracic Surgeon3152 Plastic Surgeon3153 Orthopedic Surgeon3154 Peripheral Vascular Surgeon3160 Aviation Medical Officer3167 Preventive Dentistry Officer3168 Endodontist3170 General Dentistry Officer3171 Oral Surgeon3172 Pedodontist3173 Orthodontist3174 Periodontist3175 "Prosthodontist, Removable"3176 "Prosthodontist, Fixed"3177 Oral Pathologist3178 Dental Staff Officer3179 Oral Medicine Officer3180 Physiatrist31B Field Communications Electronics Equipment Mechanic31C Armor Radio Mechanic31D Artillery Radio Mechanic31D PERSHING Communications Specialist31E Field Radio Repairer31F Infantry Communications Chief31G Tactical Communications Chief31H Artillery Communications Chief31J Teletypewriter Repairer31K General Cryptographic Repairman31L Multichannel Communications Equipment Repairman31M Multichannel Transmission Systems

31N Communications Systems/Circuit Controller31Q Avionics Repairman31R Target Aircraft Control System Mechanic31S Field General Communication Security Repairer31T Field Systems Communications Security Equipment Repairer31U Tactical COMSEC Maintenance Chief31W Tactical Electronics Maintenance Chief31Z Telecommunications Operations Chief3200 General Veterinary Officer3201 Veterinary Public Health Officer3202 Small Animal Veterinary Officer3203 Veterinary Staff Officer3204 Veterinary Food Hygienist3205 Veterinary Laboratory Animal Officer3206 Veterinary Pathologist3207 Veterinary Microbiologist/Parasitologist3208 Veterinary Radiobiologist/Radiologist3209 Veterinary Comparative Medicine Officer3210 Veterinary Laboratory Officer32A Fixed Station Attendant32B Fixed Station Receiver Repairman32C Fixed Station Transmitter Repairman32D Communications System Circuit Controller32E Fixed Plant Carrier Repairman32F Fixed Ciphony Repairer32G Fixed Cryptographic Equipment Repairer32H Fixed Station Radio Repairer32Z Communications-Electronics Maintenance Chief3304 Therapeutic Radiologist (Radiation Oncologist)3305 Diagnostic Radiologist3306 Radiologist3307 Microbiologist3308 Nuclear Medical Science Officer3309 Biochemist3310 Parasitologist3311 Immunologist3314 Clinical Laboratory Officer

3315 Entomologist3316 Nutrition Officer3318 Pharmacy Officer3324 Anatomical Pathologist3325 Pathologist3326 Clinical Pathologist3327 Physiologist3328 Forensic Pathologist3329 Neuropathologist3340 Optometry Officer3350 Podiatrist3360 Audiologist3370 Environmental Science Officer3371 Sanitary Engineer3380 Military Community Oral Health Manager33B General Intercept Equipment Repairman33C Terminal Receiving System Repairman33D Intercept Recoding Systems Repairman33E Microbarograph Equipment Repairman33F Intercept Demultiplex Systems Repairman33G ECM/DF Systems Repairman33Z Intercept Systems Maintenance Supervisor-Inspector3416 Occupational Therapist3418 Physical Therapist341A Cryptographic Equipment Repair Technician3420 Hospital Dietitian3430 Nurse Administrator3431 Community Health Nurse3437 Psychiatric/Mental Health Nurse3442 Pediatric Nurse3443 Operating Room Nurse3445 Nurse Anesthetist3446 Obstetric & Gynecologic Nurse3448 Medical-Surgical Nurse3449 Clinical Nurse34B Punch Card Machine Repairer34C ADP Auxiliary Equipment Repairman

34D ADPS Repairman34E NCR 500 Computer Repairer34F Digital Subscriber Terminal Equipment(DSTE) Repairer34G Fire Control Computer Repairer34H Automatic Digital Message Switch Equipment(ADMSE) Repairer34J Univac 1004/1005 DCT 9000 System Repairer34K IBM 3000 Repairer34L ADMS Peripheral Equipment Repairman34M Sds 920 Equipment Repairman3506 Field Medical Assistant3510 Health Services Comptroller351A Power Station Technician3520 Biomedical Information Systems Officer3530 Patient Administration Officer3560 Health Services Personnel Manager3565 Health Services Manpower Control Officer3570 Health Services Plans & Operations Officer3581 Aeromedical Evacuation Officer3590 Health Services Materiel Officer3593 Health Services Intelligence Officer3595 Health Facilities Planning Officer35B Electronic Instrument Repairer35C Electronic Devices Repairman35D Meteorological Equipment Repairman35E Special Electronic Devices Repairer35F Nuclear Weapons Electronics Specialist35G "Medical Equipment Repairer, Unit Level"

35H "Test, Measurement, And Diagnostic Equipment (TMDE) Maintenance Support Specialist"

35J Aircraft Fire Control Repairman35K Avionics Mechanic35L Avionic Communications Equipment Repairer35M Avionic Navigation And Flight Control Equipment Repairer35N Avionic Flight Control Equipment Repairman35P Avionic Equipment Maintenance Supervisor35R Avionic Special Equipment Repairer35S Electronic Biomedical Equipment Repairer

35T X-ray Biomedical Equipment Repairer35U "Medical Equipment Repairer, Advanced"3606 Social Work Officer361A Fire Distribution Systems Repair Technician3620 Psychologist3621 Health Services Research Psychologist3639 Behavioral Science Associate36A Wireman36B Telephone Installer-Repairman36C Wire Systems Installer36D Antenna Installer Specialist36E Cable Splicer36F Circuit Control Specialist36G Manual Central Office Repairman36H Dail/Manual Central Office Repairer36K Tactical Wire Operations Specialist3900 Medical Unit Commander

40, 400, 4000 4010 "Supply Staff Officer (G4, S4)"4011 Maintenance Staff Officer4112 Club Manager4114 Food Adviser411A Ammunition Technician4130 Subsistence Officer41B Topographic Instrument Repair Specialist41C Fire Control Instrument Repairer41D Watch Repairman41E Audio-Visual Equipment Repairer41F Projector Repairman41G Aerial Surveillance Photographic Equipment Repairer41H Photographic Equipment Repair Chief41J Office Machine Repairer41K Reproduction Equipment Repair Specialist4200 Supply & Service Officer4201 Supply Management Officer4210 Army Exchange Officer421A Armament Repair Technician4223 Commissary Officer

42B Cast Specialist42C Orthotic Specialist42D Dental Laboratory Specialist42E Optical Laboratory Specialist42F Dental Fixed Prosthetic Specialist4300 Materiel Project/Product Manager4312 Real Estate Officer4319 Procurement Control & Production Officer4320 Procurement Officer4360 Printing Officer4371 Dog Handling Officer43A Textile And Leather Repair Assistant43B Textile Repairman43C Canvas And Leather Repairman43D Shoe Repairman43E Parachute Rigger43J Textile Repairman43K Canvas Repairman43L Shoe Repairman43M Fabric Repair Specialist4403 Foreign Aid Supply Officer441A Repair Shop Technician4420 Aircraft Supply Officer4445 Storage Officer4475 Railway Supply Officer44A Metal Working Assistant44B Metal Worker44C Welder44D Blacksmith44E Machinist44K Marine Hull Repairman44Z Metal Working Foreman4510 Unit Ammunition Officer4514 Conventional Ammunition Officer4515 Missile & Munitions Officer4516 Missile Maintenance Officer4517 Special Ammunition Officer

45A Armament Maintenance Apprentice45B Small Arms/Artillery Repairer45C Field Artillery Repairman45D Artillery Calibration Specialist45E Air Defense Artillery Repairman45F Artillery Mechanic45G Turret Artillery Repairman45H Small Missile Systems Repairman45J Aircraft Armament Repairman45K Armament Repairer45L Artillery Repairer45M Aircraft Armament Subsystem Mechanic45N M60A1/A3 Tank Turret Mechanic45P Sheridan Turret Mechanic45R M60A2 Tank Turret Mechanic45Z Armament/Fire Control Maintenance Supervisor4600 Property Disposal Officer4601 Salvage Collecting Officer461A Airdrop Equipment Repair Technician46A Missile Mechanical Repair Apprentice46C HURCULES Missile Mechanic46D Improved HAWK Mechanical Systems Repairman46D NIKE Mechanical Repairman46F HAWK Mechanical Repairman46G CORPORAL Missile Crewman46H CORPORAL Ground Handling Equipment Repairman46J REDSTONE Missile Mechanic46K REDSTONE Propulsion/Structures Repairman46L Sergeant Electrical Mechanical Repairman46M PERSHING Rocket Motor/Structures Repairman46N PERSHING Electrical-Mechanical Repairer4803 Maintenance Officer4804 Marine Maintenance Officer4808 Armament Maintenance & Repair Officer4815 Mechanical Maintenance Officer4818 Tire Maintenance & Repair Officer4820 Parachute Maintenance & Aerial Supply Officer

4823 Aircraft Maintenance Officer4825 Electronics Maintenance Officer4830 Laundry & Fumigation Officer4850 Railway Shop Superintendent4851 Car Repair Shop Superintendent4857 Railway Machine Shop Superintendent4862 Diesel Locomotive Shop Superintendent4940 Water Supply Unit Commander4942 Forestry Officer4944 Gas Generating Unit Commander4960 Petroleum Products Supply Officer

50, 500, 5000 5000 Recreation Services Officer51A Construction And Utilities Worker51B Carpentry And Masonry Specialist51C Structure Specialist51D Mason51E Camouflage Specialist51F Pipeline Specialist51G Materials Quality Specialists51H Construction Engineering Supervisor51J Heating And Ventilating Specialist51L Refrigeration Specialist51M Firefighter51N Water Treatment Specialist51P Utilities Engineering Supervisor51Q Terrain Analyst51R Interior Electrician51S Tactical Support Environmental Equipment Repairman521A Utilities Maintenance Technician521B No occupational title data available521C Tactical Support Equipment Maintenance Technician Safeguard5241 Army Band Officer52A Powerman52B Power Generation Equipment Operator/Mechanic52C Utilities Equipment Repairer52D Power-Generation Equipment Repairer52E Prime Power Production Specialist

52F Electrician52G High Voltage Electrician52H Nuclear Power Plant Mechanic/Operator52J Nuclear Power Plant Electrician/Operator52K Nuclear Power Plant Instrument/Operator52L Nuclear Power Plant Processing/Control Specialist52M Nuclear Power Plant Chief52N Tactical Support Electrical Equipment Repairman52W Tactical Support Equipment Maintenance And Repair Supervisor5310 Chaplain53B Industrial Gas Production Specialist53C Carbon Dioxide-Hydrogen Production Specialist53D Liquid-Oxygen-Nitrogen Production Specialist5400 Publications Officer54A Chemical Operations Specialist54B Decontamination Specialist54C Smoke Operations Specialist54D Chemical Equipment Repairer54E "Nuclear, Biological, And Chemical (NBC) Specialist"54F Chemical Operations Specialist5503 Public Education Officer5505 Information Officer5522 Broadcast Officer5525 Physical Reconditioning Officer55A Ammunition Helper55B Ammunition Specialist55C Ammunition Maintenance Specialist55D Explosive Ordnance Disposal (EOD) Specialist55E Chemical Demolitions Specialist55F Missile And Rocket Explosive Specialist55G Nuclear Weapons Specialist55X Ammunition Inspector55Z Ammunition Supervisor561A Master or Mate561B Harbormaster/Pilot561C "Vessel Master, Unlimited"561D "Vessel Master, Coastal; Mate, Unlimited"

561E Mate562A Marine Engineering Technician562B Marine Engineering Technician/Marine Inspector562C "Chief Engineer, Unlimited"562D "Chief Engineer, Coastal; Assistant Engineer, Unlimited"562E Assistant Engineer56A Supply Handler56B General Warehouseman56C Petroleum Storage Specialist56D Subsistance Storage Specialist56E Stevedore57A Duty Soldier57B Railway Section Foreman57C Tire Repairman57D Sawyer57E Laundry And Bath Specialist57F Mortuary Affairs Specialist57G Duty Foreman57H Cargo Specialist5900 Public Welfare Officer

60, 600, 6000 6010 Public Finance Officer6100 Finance & Accounting Officer6101 Accounting Officer61A Seaman61B Watercraft Operator61C Watercraft Engineer61D Amphibian Operator61E Amphibian Engineer61F Marine Hull Repairer61Z Marine Senior Sergeant6200 Finance Staff Officer6201 Finance Disbursing Officer621A Engineer Equipment Repair Technician62A Engineer Equipment Assistant62B Construction Equipment Repairer62C Engineer Missile Equipment Specialist62D Asphalt Equipment Operator

62E Heavy Construction Equipment Operator62F Crane Operator62G Quarrying Specialist62H Concrete And Asphalt Equipment Operator62J General Construction Equipment Operator62K Grader Operator62L Wheeled Tractor Operator62M Rough Terrain Forklift And Loader Operator62N Construction Equipment Supervisor62P Tactical Support Mechanical Equipment6302 Program/Budget Officer631A Automotive Maintenance Technician632A Automotive Repair Technician63A Mechanical Maintenance Helper63B Light-Wheel Vehicle Mechanic63C General Vehicle Repairman63D Quartermaster Light Equipment Repairman63E Quartermaster Heavy Equipment Repairman63F Recovery Specialist63G Fuel And Electrical Systems Repairer63H Track Vehicle Repairer63J Quartermaster And Chemical Equipment Repairer63K Quartermaster Heavy Equipment Repairman63L Quartermaster Equipment Maintenance Senior63Z Mechanical Maintenance Supervisor6400 Statistician6410 Economist64A Light Vehicle Driver64B Heavy Vehicle Driver64C Motor Transport Operator65A Railway Maintenance And Operations Apprentice65B Locomotive Repairer65C Diesel-electrical Locomotive Repairman65D Railway Car Repairer65E Airbrake Repairer65F Locomotive Electrician65G Railway Section Repairer

65H Locomotive Operator65J Train Crewmember65K Railway Movement Coordinator65Z Railway Senior Sergeant66A Railway Operations Apprentice66B Locomotive Operator66C Trainman66D Railway Movement Coordinator671B "Aircraft Repair Technician, Non-rated"671C "Aircraft Repair Technician, Rotary Wing Rated"671D "Aircraft Repair Technician, Fixed Wing Rated"671E "Aircraft Repair Technician, Rotary & Fixed Wing Rated"67A Aircraft Maintenance Apprentice67B O-1/U-6 Airplane Repairman67C U/A Airplane Repairman67D Single-Engine Airplane Repairman67E Single-Engine Airplane Maintenance Chief67F Airplane Technical Inspector67G Utility Airplane Repairer67H 0V-1 Airplane Repairman67J Multi-Engine Medium Transport Airplane Mechanic67K Multi-Engine Airplane Repairman67L Multi-Engine Airplane Maintenance Chief67M OH-13/OH-23 Helicopter Repairman67N UH-1 Helicopter Repairer67P CH-34 Helicopter Repairman67Q Single-Engine Single-Rotor Helicopter Repairman67R OH-58 Helicopter Repairman67R Single-Engine Single-Rotor Helicopter Maintenance Chief67S Single-Engine Tandem-Rotor Helicopter Mechanic67T CH-37 Helicopter Repairman67U CH-47 Helicopter Repairer67V Observation/Scout Helicopter Repairer67W Aircraft Quality Control Supervisor67X Heavy Lift Helicopter Repairer67Y AH-1 Attack Helicopter Repairer67Z Aircraft Maintenance Senior Sergeant

68A Aircraft Components Repair Apprentice68B Aircraft Powerplant Repairer68C Aircraft Reciprocating Engine Repairman68D Aircraft Powertrain Repairer68E Aircraft Rotor And Propeller Repairman68F Aircraft Electrician68G Aircraft Structural Repairer68H Aircraft Pneudraulics Repairer68J Aircraft Instrument Repairman

70, 700, 7000 7004 Division Engineer7010 Engineer Staff Officer7020 Public Works & Utilities Officer70A Clerk7110 Construction Engineer711A Personnel/Administrative Technician712A General Staff Administrative Technician7130 Facilities Engineer713A Legal Administrator7140 Highway Engineer71A Clerk71B Clerk-Typist71C Executive Administrative Assistant71D Legal Specialist71E Court Reporter71F Postal Clerk71G Patient Administration Specialist71H Personnel Specialist71J Pay Records Specialist71K Personnel Management Specialist71L Administrative Specialist71M Chaplain's Assistant71N Traffic Management Coordinator71P Flight Operations Coordinator71Q Journalist71R Broadcast Journalist71S Attache Specialist71T Equipment Maintenance Clerk

71U Card And Tape Writer7211 Marine Hull Maintenence Officer721A Cryptographic Technician7221 Marine Engine Maintenance Officer7240 Port & Dock Construction Engineer7242 Marine Diver72B Communications Center Specialist72C Central Office Switchboard Operator72D Cryptographic Center Specialist72E Tactical Telecommunications Center Operator72F Data Communications Terminal Specialist72G Automatic Data Telecommunications Center Operator72H Central Office Operations Operator7300 Chemical Engineer7312 Physicist7314 Chemical Staff Officer7315 Chemical Combat Service Support Officer7317 Metallurgist7318 Organic Chemist7319 Chemist7320 Munitions Production Officer7330 Nuclear Weapons Effects Officer7360 Chemical Munitions Development Officer73A Finance Clerk73B Audit Specialist73C Finance Specialist73D Accounting Specialist73Z Finance Senior Sergeant741B "Data Processing Technician, PCM"741C "Data Processing Technician, ADPS"741D "Data Processing Technician, Programmer"741E Telecommunications Automation Software Technician7421 Production Engineer7422 Safety Engineer7423 Aviation Safety Officer7424 Experimental Test Pilot74A Data Processing Equipment Operator

74B Card And Tape Writer74C Data Analysis Specialist74D Information Systems Operator74E Computer Systems Operator74F Software Analyst74G ADP Systems Analyst74Z Record Information Systems Chief7500 Mechanical Engineer7501 Aeronautical Engineer7502 Air Conditioning & Refrigeration Engineer75B Personnel Administration Specialist75C Personnel Management Specialist75D Personnel Records Specialist75E Personnel Actions Specialist75Z Personnel Sergeant7601 Electronics Engineer7611 Electrical Engineer761A General Supply Technician762A Support Supply Technician76A Supplyman76B Chemical Supply And Parts Specialist76D Ordnance Supply And Part Specialist76E Quartermaster Supply Specialist76F Quartermaster Parts Supply Specialist76G Signal Supply And Parts Specialist76H Transportation Supply And Parts Specialist76J Medical Supply Specialist76K General Supply Specialist76L Film Library Specialist76M Ammunition Records Clerk76N Procurement Sergeant76P Materiel Control And Accounting Specialist76Q Special Purpose Materiel Supply Specialist76R Weapons Materiel Supply Specialist76S Vehicle Materiel Supply Specialist76T Aircraft Materiel Supply Specialist76U Communications Electronics Materiel Supply Specialist

76V Materiel Storage And Handling Specialist76W Petroleum Supply Specialist76X Subsistence Supply Specialist76Y Unit Supply Specialist76Z Senior Supply/Service Sergeant7750 Communications Electronics Systems Engineer7860 Radio Engineer7881 Radio Frequency Engineering Officer7899 Public Communications Officer7900 Civil Engineer7902 Soils Engineer7915 Topographic Engineer7922 Railway Construction Engineer7930 Petroleum Engineer7932 Pipeline Engineer7940 Geologist7960 Sanitary Engineer

80, 800, 8000 8000 Civil Affairs Agricultural Officer8101 Legal Officer8102 "Military Judge, Trial & Appellate Level"8103 Judge Advocate or Judge Advocate General8104 Civil Government Officer8105 "Civil Affairs Officer (G5, S5)"811A Photomapping Technician8130 Patent Lawyer81A General Draftsman81B Technical Drafting Specialist81C Cartographer81D Map Compiler81E Illustrator81F Model Maker81Q Terrain Intelligence Analyst8204 Meteorologist821A Survey Technician82A Rodman And Tapeman82B Construction Surveyor82C Field Artillery Surveyor

82D Topographic Surveyor82E Topographic Computer8311 Geographer831A Map Reproduction Technician832A No occupational title data available833A Reproduction Technician83A Printer's Apprentice83B Compositor83C Letter Pressman83D Process Photographer83E Photo And Layout Specialist83F Printing And Bindery Specialist83Z Photolithography Chief8400 Physical Anthropologist8430 Research Psychologist84B Still Photographic Specialist84C Motion Picture Specialist84D Audio Specialist84E Television Cameraman84F Audio/TV Specialist84G Photographic Laboratory Specialist8500 Pictorial Unit Commander8510 Pictorial Officer8511 Motion Picture & TV Director8521 Motion Picture or TV Writer8530 Audio-Visual Instructional Technology Officer8605 Arts-Monuments Officer8700 Operations Research/Systems Analysis (OR/SA) Officer

90, 900, 9000 9000 Public Safety Officer9100 Provost Marshal9110 Military Police Officer911A Nuclear Weapons Technician9121 Correctional Officer913A Armament Repair Technician9150 Criminal Investigation Officer915A Unit Maintenance Technician (Light)919A Engineer Equipment Repair

91A Medical Corpsman91B Medical NCO91C Practical Nurse91D Operating Room Specialist91E Dental Specialist91F Psychiatric Specialist91G Behavioral Science Specialist91H Social Work Specialist91J Physical Therapy Specialist91K Physical Reconditioning Specialist91L Occupational Therapy Specialist91M Electroencephalograph Specialist91N Cardiac Specialist91P Radiology Specialist91Q Pharmacy Specialist91R Veterinary Food Inspection Specialist91S Preventive Medicine Specialist91T Animal Care Specialist91U "Ear, Nose, And Throat Specialist"91V Respiratory Specialist91W Nuclear Medicine Specialist91Y Eye Specialist91Z Medical Senior Sergeant9224 Explosive Ordnance Disposal Officer92B Medical Laboratory Specialist92C Petroleum Laboratory Specialist92D Chemical Laboratory Specialist9300 "Strategic Intelligence Staff Officer (G2, J2)"9301 "Tactical Intelligence Staff Officer (G2, S2)"9303 Army Attache9305 Psychological Operations Officer9307 Installation Intelligence Officer9309 Aerial Surveillance Officer9310 Inspector General9330 Translation Officer (Designated Language)9332 Interpreter9335 Censorship Officer

93B Air Traffic Controller93D Flight Simulator Specialist93E Meteorological Observer93F Field Artillery Meteorological Crewmember93G Microbarograph Specialist93H Air Traffic Control Tower Operator93H Electronic Countermeasures Specialist93J Air Traffic Controller Radar Controller93J Countermeasures Search Specialist93K ATC Approach Control/Enroute Specialist93L Air Traffic Control Chief9414 Fire Protection Officer941A Food Service Technician94A Food Service Helper94B Food Service Specialist94C Meat Cutter94D Baker94E Pastry Baker94F Hospital Food Service Specialist94Z Food Service Supervisor9511 Camouflage Officer951A Criminal Investigator951B Polygraph Examiner951C Questioned Document Examiner951D Firearms & Toolmark Examiner951E Latent Fingerprint Examiner951F Forensic Photographer951G Forensic Chemist95B Military Police95C Corrections Specialist95D CID Special Agent9600 General Electronics Warfare Cryptologic Officer9601 Cryptanalytic Officer9604 Language Officer9610 Electronic Warfare Officer961A Attache Technician9620 Signal Intelligence Officer

962A Image Interpretation Technician9630 Signal Security Officer963A Interrogation Technician9640 Electronic Warfare Cryptologic Staff Officer964A Order of Battle Technician9666 Counterintelligence Officer9668 Area Intelligence Officer96B Intelligence Analyst96C Interrogator96D Imagery Analyst971A Counterintelligence Technician972A Area Intelligence Technician97B Counterintelligence Agent97C Area Intelligence Specialist97D Military Intelligence Coordinator97Z Military Intelligence Sergeant Major981A Cryptanalytic Technician982A Traffic Analysis Technician983A Emanations Analysis Technician988A Voice Intercept Technician98A Communication Security Clerk98B EW/Cryptanlytic Cryptanalyst98C Signals Intelligence Analyst98D Communications Security Analyst98G Voice Interceptor98H Voice Countermeasures Operator98J Communications Interceptor/Analyst

Vietnam-era Special Qualification Identifiers

Enlisted and warrant officer MOS codes may end in "0", or may have a letter code attached to indicate special qualifications. Per DA Pam 611-21, the Special Qualification Identifier (SQI) character formed the fifth character (suffix) of enlisted and warrant officer Military Occupational Specialty (MOS) Codes. These included:

Suffix Description

B Inspector General Noncommissioned OfficerD Civil AffairsE Military MountaineerF Flight StatusG RangerH InstructorL LinguistM First Sergeant (to differentiate from Master Sergeant E8)N Joint PlannerP Parachutist, anyone awarded jump wings upon completion of Airborne SchoolQ Equal Opportunity AdviserR Army Recruiter (Career Counsellor) NOTE: Not certain of this SQI.S Special Operations (Special Forces)V Airborne RangerX Drill Sergeant

With Commissioned Officers, the qualifier was a prefix, not a suffix. For example, "7" stands for Airborne. An Infantry Oficer is "1542", while an airborne infantry officer would have an MOS of 71542. Only one prefix was appended to an MOS, although PMOS and DMOS may carry different prefixes.

Suffix Description

3 Special Forces4 Army Recruiter5 Nuclear Weapons Employment Specialist7 Parachutist, anyone awarded jump wings upon completion of Airborne School8 Ranger