These are the VietNam-era MOS's for enlisted Marines.

        From data provided by Michael E. Cunningham (unclemec@aol.com).

CODE
          Description
0100
          Basic Administrative Man
0121
          Personnel Clerk
0131
          Unit Diary Clerk
0151
          Administrative Clerk
0161
          Postal Clerk
0182
          Personnel Chief
0193
          Personnel/Administrative Chief
0200
          Basic Intelligence Man
0211
          Counterintelligence Assistant
0231
          Intelligence Man (Air/Ground)
0239
          Intelligence Assistant
0241
          Imagery Interpreter
0251
          Interrogator-Translator (Designated Language)
0291
          Intelligence Chief
0292
          Counterintelligence Chief
0293
          Imagery Interpretation Chief
0294
          Interrogator-Translator Chief
0300
          Basic Infantryman
0311
          Rifleman
0331
          Machine Gunner
0341
          Mortar Man
0351
          Antitank Assaultman
0369
          Infantry Unit Leader
0400
          Basic Logistics Man
0431
          Embarkation Man
0441
          Logistics Man
0491
          Logistics/Embarkation Chief
0800
          Basic Field Artillery Man
0811
          Field Artillery Batteryman
0812
          Field Artillery Nuclear Projectileman
0842
          Field Artillery Radar Operator
0844
          Field Artillery Fire Control Man
0846
          Artillery Scout Observer
0847
          Artillery Meteorological Man
0848
          Field Artillery Operations Man
0849
          Shore Fire Control Party Man
0861
          Observer Liaison Man
0891
          Field Artillery Chief
0893
          Field Artillery Operations Chief
0894
          Observer Liaison Chief
1100
          Basic Utilities Man
1121
          Plumbing and Water Supply Man
1122
          Well Driller
1141
          Electrician
1142
          Electrical Equipment Repairman
1161
          Refrigeration Mechanic
1169
          Utilities Chief
1171
          Hygiene Equipment Operator
1173
          Hygiene Equipment Repairman
1179
          Hygiene Equipment Chief
1300
          Basic Construction, Equipment and Shore Party Man
1316
          Metal Worker
1341
          Engineer Equipment Mechanic
1345
          Engineer Equipment Operator
1346
          Rock Quarryman
1349
          Engineer Equipment Chief
1371
          Combat Engineer
1372
          Atomic Demolition Employment Technician
1379
          Engineer Operations Chief
1381
          Shore Party Man
1391
          Bulk Fuel Man
1400
          Basic Drafting, Surveying and Mapping Man
1401
          Programmer, Autocoder
1401
          Programmer, Symbolic
1401
          4024, Computer Operator
1401
          5981, Digital Data System Technician IBM
1411
          Construction Draftsman
1421
          Surveyor
1422
          Surveying and Drafting Chief
1431
          Map Compiler
1432
          Cartographer
1453
          Mapping Chief
1500
          Basic Printing and Reproduction Man
1500
          4044, Operator/Programmer, UNIVAC
1500
          5982 System, Digital Data System Tech, UNIVAC
1521
          Duplicating Man
1522
          Offset Pressman
1531
          Plate/Layout Man
1532
          Process Cameraman
1541
          Reproduction Chief
1542
          Reproduction Equipment Repairman
1800
          Basic Tank and Amphibian Tractor Man
1811
          Tank Crewman
1831
          Armored Amphibian Crewman
1833
          Amphibian Tractor Crewman
1891
          Tank and Amphibian Tractor Operations Chief
1892
          Tank Chief
1893
          Amphibian Tractor Chief
2100
          Basic Armament Repairman
2111
          Infantry Weapon Repairman
2112
          Rifle Team Equipment Repairman
2131
          Artillery Weapon Repairman
2141
          Tracked Vehicle Repairman, tank
2142
          Tracked Vehicle Repairman, Amphibian Tractor
2144
          Artillery, Tracked Vehicle Repairman, Self Propelled
2149
          Tracked vehicle Technician
2151
          Turret Repairman
2161
          Repair Shop Machinist
2171
          Optical Instrument Repairman
2181
          Weapon Technician
2191
          Armament Chief
2192
          Weapons Chief
2193
          Tracked Vehicle Chief
2300
          Disposal Man, Basic Ammunition and Explosive Ordnance
2311
          Ammunition Technician
2335
          (Conventional Weapons), Explosive Ordnance Disposal Technician
2336
          Explosive Ordnance Disposal Technician
2500
          Basic Operational Communications Man
2511
          Wireman
2519
          Wire Chief
2531
          Field Radio Operator
2532
          Microwave Equipment Operator
2533
          Radio Telegraph Operator
2537
          Radio Chief
2542
          Communication Center Man
2549
          Communication Center Chief
2570
          Electronic Countermeasures Operator
2571
          Special Radio Operator
2572
          Cryptanalyst
2573
          Traffic Analyst
2574
          Cryptologic Linguist
2575
          Special Communication Operator
2576
          Special Electronics Operator/Analyst
2577
          Special Non-Morse Radio Operator
2578
          Cryptologic/Electronic Warfare Chief
2579
          Radio Direction Finder Operator
2591
          Operational Communications Chief
2800
          Basic Telecommunications Maintenance Man
2811
          Telephone Technician
2813
          Cable Systems Technician
2814
          Central Office Installer
2818
          Teletype Technician
2819
          KG-l3 Teletype Technician
2821
          Mobile Dial Central Tech
2822
          Electronic Switching Equipment Technician
2823
          Technical Controller
2825
          Fixed Ciphony Technician
2826
          Digital Subscriber Terminal Equipment Tech
2827
          Mobile Data Terminal Tech
2829
          Mobile Communication Central Tech
282B
          KW-26 Terminal Technician
2831
          Microwave Equipment Repairman
2833
          Satellite Terminal Repairman
2841
          Ground Radio Repairman
2851
          Aviation Radio Repairman
2853
          Aviation Meteorological Equipment Repairman
2861
          Radio Technician
2864
          Satellite Terminal Technician
2866
          Aviation Radio Technician
2871
          Electronic Instrument Repairman
2872
          Electronic Calibration Technician
2873
          Mechanical Calibration Technician
2876
          Radiac Instrument Repairman
2877
          Radiac Instrument Technician
287a
          Metrology Technician
2881
          Communication Security Equipment Technician
2891
          Telecommunications Maintenance Chief
2894
          Calibration Chief
3000
          Man, Basic Supply Administration and Operations
3041
          Supply Administrative Man, Manual Account
3042
          Supply Administrative Man, Mechanized Account
3051
          General Warehouseman
3052
          Preservation, Packaging and Packing Specialist
3061
          Subsistence Supply Man
3071
          Aviation Supply Man, Manual Account
3072
          Aviation Supply Man, Mechanized Account
3081
          Procurement Supply Man
3091
          Supply Administration and Operations Chief
3092
          Warehouse Supply Chief
3093
          Subsistence Supply Chief
3094
          Procurement Supply Chief
3095
          Aviation Supply Chief
3100
          Basic Transportation Man
3111
          Freight Operations Man
3112
          Air Freight Operations Man
3121
          Freight Transportation Clerk
3122
          Air Freight Transportation Clerk
3141
          Passenger Transportation Clerk
3191
          Transportation Chief
3200
          Basic Repairman
3211
          Fabric Repairman
3212
          Fabric Repair Chief
3241
          Office Machine Repairman
3242
          Officer Machine Repair Chief
3253
          Repair Chief
3300
          Basic Food Service Man
3301
          Programmer, Computer RCA
3301
          4026, Computer Operator RCA
3311
          Baker
3371
          Cook
3372
          Cook, Specialist
3373
          Veterinary Technician
3381
          Food Service Technician
3382
          Food Service Technician Specialist
3383
          Veterinary Chief
3400
          Basic Auditing, Finance and Accounting Man
3421
          Personal Financial Records Clerk
3431
          Travel Clerk
3432
          Disburser/Disbursing Chief
3441
          Auditing Technician
3451
          Accounting Clerk
3452
          Accounting Analyst/Finance Chief
3500
          Basic Motor Transport Man
3513
          Body Repairman
3516
          Automotive Mechanic
3517
          Amphibious Cargo Carrier Mechanic
3518
          Fuel and Electrical Systems Repairman
3519
          Motor Transport Chief
3531
          Motor Vehicle Operator
3532
          Amphibious Cargo Carrier Operator
3533
          Tractor Trailer Operator
3537
          Truckmaster
4000
          Basic Data Systems Man
4013
          Card Punch Operator
4014
          Electric Accounting Machine Operator
4015
          Off-Line Equipment Operator
4019
          Data Systems Librarian
4022
          Computer Operator NCR
4033
          Computer Operator IBM S/360
4034
          Master Computer Operator IBM S/360
4036
          Multi-Systems Controller IBM S/36O
4051
          Programmer, Computer NCR
4053
          Programmer, Computer RCA
4057
          Programmer, Symbolic
4058
          Programmer, Autocoder
4059
          System Programmer, Optical Character Recognition
4063
          Programmer, COBOL IBM S/36O
4065
          Programmer, ALC IBM
4067
          Programmer, Language Specialist IBM
4069
          Systems Programmer IBM S/360
4093
          Data Systems Operation Chief
4095
          Data Systems Programming Chief
4100
          Basic Marine Corps Exchange Man
4111
          Bookkeeper
4131
          Exchange Man
4191
          Exchange Chief
4300
          Basic Public Affairs Man
4312
          Press Information Man
4313
          Radio and Television Information Man
4391
          Public Affairs Chief
4400
          Basic Legal Services Man
4421
          Legal Services Man
4422
          Legal Services Reporter-SPCM (Closed Microphone)
4423
          Legal Services Reporter-GCM (Closed Microphone)
4449
          Legal Services Chief
4600
          Basic Photography Man
4631
          Photographer
4632
          Camera Repairman
4633
          Photographic Quality Control-Specialist
4634
          Photojournalist
4671
          Motion Picture Cameraman
4672
          Cinematography Specialist
4681
          Motion Picture Film Editor
4691
          Photographic Chief
4900
          Basic Training Support Man
4911
          Illustrator
4921
          Audiovisual Librarian
4931
          Audiovisual Equipment Operator
4941
          Audiovisual Equipment Technician
4991
          Training Support Chief
5360
          Programmer, ALC IBM
5360
          Programmer, Language Specialist IBM
5500
          Basic Musician
5519
          Enlisted Band Leader
5521
          Drum Major
5523
          Instrument Repairman
5526-5565
          Bandsman
5567
          Arranger, Band
5571
          Drum and Bugle Corps Drum Major
5574-5579
          Drum and Bugle Corps Bugler
5592
          Drum and Bugle CorpS Arranger
5593
          Drummer, Drum and Bugle Corps
5700
          Man, Basic Nuclear, Biological and Chemical Defense
5711
          Specialist, Nuclear, Biological and Chemical Defense
5712
          Chemical, Technical Escort
5800
          Basic Military Police and Corrections Man
5811
          Military Policeman
5812
          Marijuana Detector Dog Handler
5813
          Accident Investigator
5821
          Criminal Investigator
5822
          Polygraph Examiner
5831
          Corrections Man
5832
          Correctional Counselor
5900
          Basic Electronics Maintenance Man
5921
          Improved HAWK Fire Control Repairman
5922
          Central Repairman, Improved HAWK Information Coordination
5923
          Improved HAWK Firing Section Repairman
5924
          Improved HAWK Pulse Radar Technician
5925
          Improved HAWK Continuous Wave Radar Technician
5926
          Improved HAWK Automatic Fire Distribution and Engagement Simulator System
          Technician
5927
          Improved HAWK Fire Control Technician
5928
          Technician, Improved HAWK Missile System Maintenance
5929
          Improved HAWK Mechanical System Repairman
5931
          Ground Radar Technician
5932
          FADAC Radar Technician
5933
          Artillery Electronics Technician
5934
          Weapons Location Equipment Technician
5935
          Counter Mortar Radar Technician
5941
          Aviation Radar Repairman "A"
5942
          Aviation Radar Repairman "B"
5943
          Aviation Fire Control Repairman
5945
          Aviation Radar Repairman "C"
5948
          Aviation Radar Technician
5952
          Air Traffic Control Navigational Aids Technician
5953
          Air Traffic Control Radar Technician
5959
          Air Traffic Control Electronics Technician
5962-64
          Tactical Data System Repairman
5974
          Tactical Air Command Central Technician
5978
          Tactical Data Communications Central Technician
5979
          Tactical Air Operations Central Technician
5991
          Electronics Maintenance Chief
5992
          Ground Radar Maintenance Chief
5993
          Aviation Ground Radar Maintenance Chief
5994
          Tactical Data Systems Maintenance Chief
5995
          Missile Systems Maintenance Chief
5996
          Digital Data Systems Maintenance Chief
5997
          Air Traffic Control Maintenance Chief
6000
          Basic Aircraft Maintenance Man
6011
          Aircraft Mechanic, Trainee
6012
          Aircraft Mechanic, A4/TA4
6013
          Aircraft Mechanic, A6/EA6
6014
          Aircraft Mechanic, F4/RF4
6015
          Aircraft Mechanic, AV-8A
6016
          Aircraft Mechanic, KC-130
6017
          Aircraft Mechanic, Jet General
6018
          Aircraft Mechanic, OV-10
6019
          Aircraft Maintenance Chief
6021
          Aircraft Power Plants Mechanic, Trainee
6022
          Systems Technician, IMA Aircraft Power Plants Mechanic, J52
6023
          Aircraft Power Plants Mechanic, T76
6024
          Aircraft Power Plants Mechanic, J79
6025
          Pegasus - Aircraft Power Plants Mechanic, Rolls Royce
6026
          Aircraft Power Plants Mechanic, T56
6027
          Aircraft Power Plants Mechanic, Jet General
6028
          Aircraft Mechanic, Reciprocating
6031
          Aircraft Flight Engineer, KC-l3O Trainee
6032
          Aircraft Power Plants Test Cell Operator
6034
          Spectrometric Oil Analysis Technician
6036
          Aircraft Propeller Mechanic
6038
          Aircraft Flight Engineer, KC-l3O
6041
          Aircraft Structures Mechanic, Trainee
6042
          Aircraft Structures Mechanic
6043
          Aircraft Welder
6044
          Aircraft Non-Destructive Testing Supervisor
6051
          Trainee, Aircraft Hydraulic/Pneumatic Mechanic
6052
          General Aircraft Hydraulic/Pneumatic Mechanic
6053
          A6/EA6 - Aircraft Hydraulic/Pneumatic Mechanic
6054
          F/4/RF4 - Aircraft Hydraulic/Pneumatic Mechanic
6059
          Aircraft Airframes Maintenance Chief
6062
          Aircraft Safety Equipment Mechanic
6064
          Flight Equipment Man
6067
          Aircraft Safety Equipment Chief
606l
          Aircraft Safety Equipment Mechanic, Trainee
6071
          Aircraft Maintenance Ground Support
6072
          Equipment Mechanic, Aircraft Maintenance Ground Support
6075
          Cryogenics Equipment Operator
6076
          Equip Hydraulic/Pneumatic/Structures Mech - Aircraft Maint Ground Support
6077
          Equipment Electrician, Aircraft Maintenance Ground Support
6078
          Equipment Refrigeration Mechanic, Aircraft Maintenance Ground Support
6079
          Equipment Chief, Aircraft Maintenance Ground Support
6082
          Aircraft Maintenance Administration Clerk
6083
          Technician, Aircraft Maintenance Data Analysis
6111
          Helicopter Mechanic, Trainee
6113
          Helicopter Mechanic, CH-46, CH-53
6114
          Helicopter Mechanic, U/AH-1
6119
          Helicopter Maintenance Chief
6121
          Helicopter Power Plants Mechanic, Trainee
6122
          Helicopter Power Plants Mechanic, T-58
6124
          Helicopter Power Plants Mechanic T-53
6125
          Helicopter Power Plants Mechanic, T-64 G123, T-400
6131
          Helicopter Dynamic Components Mechanic-Trainee
6132
          Helicopter Dynamic Components Mechanic
6500
          Basic Aviations Ordnance Man
6521
          Aviation Ordnance Munitionsman
6531
          Aircraft Ordnance-Technician -
6533
          Aviation Ordnance Chief
6541
          Aircraft Ordnance/Missile Technician
6600
          Basic Avionics Man
6611
          Technician, Trainee, Aircraft Communications/Navigation Systems
6612
          Tech, Helicopter/OV-10, Aircraft Communications/Navigation Systems
6613
          Tech, Transport/Utility, Aircraft Communications/Navigation Systems
6614
          Tech, A-4/TA4/A-6/EA-6/F-8, Aircraft Communications/Navigation Systems
6615
          Technician, AV-8A, Aircraft Communications/Navigation Systems
6616
          Technician, RF-4/RF-4B/J, Aircraft Communications/Navigation Systems
6617
          Aircraft Communication Systems Technician, IMA
6618
          Aircraft Navigation Systems Technician, Radio,
6619
          Aircraft Navigation Systems Technician, Radar,
6620
          IMA, Aircraft Navigation Systems Technician, TACAN,
6621
          Aircraft Radar Systems Tech, Trainee
6622
          KY-28 Cryptographic Technician
6623
          Systems Technician, EA6A, Aircraft Passive Electronic Countermeasures
6624
          Systems Technician EA-6A, Aircraft Active Electronic Countermeasures
6625
          Tech, RF-4, Aircraft Radar Recon Systems
6626
          Aircraft Passive Electronic Countermeasures
6627
          Systems Technician, IMA, Aircraft Active Electronic Countermeasures
6628
          Systems Technician, IMA, Aircraft Deceptive Electronic Countermeasures
6629
          Tech, IMA, Aircraft Radar/IR Recon Systems
6631
          Trainee, Aircraft Electrical Systems Technician
6632
          Helicopter/OV-10 - Aircraft Electrical Systems Technician,
6633
          Transport/Utility - Aircraft Electrical Systems Technician,
6638
          Technician, IMA, Aircraft Electrical/Instrument Systems
6639
          Computer Systems Tech, IMA, Aircraft Flight Control and Air Data
6640
          Technician, Aviation Electronic Micro-Miniature Repair
6641
          Technician, Trainee, Aircraft Armament Control/Attack Systems
6641
          Technician-Trainee, Aircraft Armament Control/Attack Systems
6642
          Aircraft Attack Systems Technician, A-4
6643
          A-6/EA-6 - Aircraft Radar Attack Systems Technician,
6643
          Aircraft Attack Systems Technician, A-6/EA-6
6644
          Aircraft Attack Systems Technician, AV-8A
6645
          Aircraft Attack Systems Technician,A-6/EA6, IMA
6646
          IMA,Aircraft Attack Systems Technician, A-4/AV-8A,
6652
          Aircraft Search/Track Radar Technician, A-6/SACR
6653
          Aircraft Ballistics Computer Technician, A6/SACE
6654
          Technician, A-6/SACE, Aircraft Inertial Navigation Systems
6655
          EMTC Systems Tech, IMA, Semi-Automatic Checkout Equipment (SACE)MATC
6656
          Technician F-4B (AERO-1A), Aircraft Armament Control Systems
6657
          F-4J - Aircraft Armament Control Systems Technician
6658
          AERO-1A, IMA, Aircraft Armament Control Systems Technician
6659
          AWG-10, IMA, Aircraft Armament Control Systems Technician
6662
          Aviation Training Devices Technician, General
6663
          Aviation Training Devices Technician, H-46
6664
          Aviation Training Devices Technician, A/EA-6
6665
          aviation Training Devices Technician, F/RF-4
6666
          Control/Air Defense Systems, Aviation Training Devices Tech, Air
6672
          Aerial Camera Systems Technician
6673
          Aerial Camera, ADAS Systems Technician, IMA
6674
          Technician, Imagery Interpretation Equipment Repair
6675
          Aviation Photographic Film Processor
6679
          Aviation Photographic/Electronic Systems Chief
6682
          Calibration Technician, Aviation Precision Measurement Equipment
6683
          Technician, Aviation Precision Measurement Equipment Repair
6689
          Aviation Precision Measurement Equipment Chief
6691
          Avionics Maintenance Chief
6693
          Training Support Center Chief
6700
          Basic Air Control/Anti-Air Warfare Man
6711
          Air Traffic Controller-Tower Trainee
6712
          Air Traffic Controller-Tower
6721
          Air Traffic Controller-Radar Trainee
6722
          Air Traffic Controller-Radar
6724
          Air Traffic Controller
6751
          Air Control/Anti-Air Warfare Operator, Trainee
6752
          Redeye Gunner
6753
          HAWK Missile System Operator
6754
          Anti-Air Warfare Batteryman
6755
          System, Air Control Electronics Operator, Manual
6756
          System, Air Control Electronics Operator, Automated
6757
          Air Support Operations Operator
6758
          Air Controller, Automated Systems
6759
          Supervisor, Air Command, Control and Defense System
6781
          Airborne Radio Operator, Trainee
6782
          Airborne Radio Operator
6785
          Aerial Navigator, Trainee
6786
          Aerial Navigator
6788
          Airborne Electronic Countermeasures Operator
6800
          Basic Weather Service Man
6821
          Weather Observer
6831
          Weather observer/Rawinsonde Operator
6842
          Weather Forecaster
7000
          Basic Aviation Operations Man
7011
          Aircraft Launch and Recovery Technician
7041
          Aviation Operations, Man
7051
          Aircraft Crash, Fire and Rescue Man
7100
          Basic Air Delivery Man
7141
          Air Delivery Man
8061
          Marine Wing Weapons, Unit Specialist
8062
          Ground Nuclear Weapons Technician
8151
          Guard
8231
          Education Assistant
8411
          Recruiter
8421
          Career Planner
8431
          Psychological Operations NCO
8441
          Civil Affairs NCO
8511
          Drill Instructor
8531
          Marksmanship Instructor
8535
          Human Relations Instructor
8561
          Physical Training Instructor
8611
          Interpreter (Designated Language)
8621
          Surveillance Sensor Operator
8631
          Surveillance Sensor Maintenance Man
8652
          Qualified, Reconnaissance Man, Parachute Jump
8654
          Qualified, Reconnaissance Man, Parachute and SCUBA
8662
          Parachutist
8711
          Infantry Operations Assistant
8811
          Fireman
8911
          Barracks and Grounds Man
8915
          Messman
8921
          Athletic and Recreation Assistant
8981
          Military Affiliate Radio System Radio Operator
8a53
          Reconnaissance Man, SCUBA Qualified
9011
          Club Manager/Treasurer
9051
          Graves Registration Specialist
9811
          Band of the USMC
9900
          Basic Marine, General Service
9915
          Special Assignment, Enlisted
9940
          Vietnamese Language Trained
9970-9975
          Basic Marine, Enlistment Program
9991
          Sergeant Major of the Marine Corps
9999
          Sergeant Major/First Sergeant


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