MOS List
WWII Military Occupational Specialties (MOS Codes)
Date Posted: Jan 5, 2008For more information and details of each MOS, please download TM 12-427 which is available on the Reference area of this site
This list is re-posted from the WWII Reenactor Forum - http://ww2reenactors.proboards35.com/
The information was posted by Matt Caffrey (Forum nickname: Caffrey) on June 11, 2007.
Numerical list of
Military Occupational Specialties
12 July 1944
The following numerical list of Military Occupational Specialties from the 1944 time period was sent to The Korean War Educator by Arthur E. Lajeunesse of Latham, New York. Arthur was a rifleman with Item Company, 23rd Infantry Regiment, 2nd Infantry Division in Korea from September 1951 to July of 1952. He ended up as a section leader in 60 mm mortars, 4th platoon. The numerical list originally came from Mr. & Mrs. Bob Hall, both retired schoolteachers who live in Scotia, New York. Bob served in the US Marine Corps in Korea. Mrs. Hall obtained the MOS list from the Library of Congress through the Freedom of Information Act.
004 - Aerial Photographer - 004
013 - Diesel Mechanic - 013
014 - Automotive Mechanic (second echelon) - 014
016 - Laboratory Technician, V-mail or microfilm - 016
017 - Baker - 017
020 - Band Leader - 020
022 - Barber - 022
024 - Blacksmith - 024
028 - Blueprinter or Photostat Operator - 028
030 - Boilermaker - 030
033 - Brakeman, Railway - 033
034 - Bricklayer - 034
035 - Carpenter, Heavy Construction - 035
037 - Meat Cutter - 037
039 - Cable Splicer, Telephone & Telegraph - 039
042 - Camera Repairman - 042
043 - Cameraman, Motion Picture - 043
044 - Canvas Cover Repairman - 044
046 - Car Carpenter, Railway - 046
047 - Traffic Man, Railway - 047
048 - Car Mechanic, Railway - 048
050 - Carpenter, General - 050
055 - Clerk, General - 055
056 - Postal Clerk - 056
058 - Conductor, Railway - 058
059 - Foreman, Construction - 059
060 - Cook - 060
061 - Coppersmith - 061
063 - Crane Operator - 063
064 - Power Shovel Operator - 064
065 - Seaman - 065
067 - Dental Laboratory Technician - 067
069 - Dispatcher, Railway - 069
070 - Draftsman - 070
071 - Draftsman, Mechanical - 071
072 - Physical Therapy Technician - 072
074 - Draftsman, Structural - 074
075 - Draftsman, Electrical - 075
077 - Powerhouse Engineer - 077
078 - Electrician - 078
080 - Marine Engineer - 080
081 - Engineman, Operating - 081
082 - Stationary Engineer - 082
084 - Stationary Fireman - 084
092 - Generator Switchboard Operator - 092
093 - Horsebreaker - 093
094 - Horseshoer - 094
095 - Central Office Repairman - 095
097 - Installer-Repairman, Telephone & Telegraph - 097
098 - Instrument Repairman, Non-Electrical - 098
100 - Structural Steel Worker - 100
102 - Foreman, Laundry - 102
103 - Laundry Machine Operator - 103
104 - Laundry Maintenance Mechanic - 104
107 - Photolithographer - 107
110 - Locomotive Engineer - 110
111 - Locomotive Fireman - 111
112 - Locomotive Mechanic - 112
113 - Woodworking Machine Operator - 113
114 - Machinist - 114
115 - Automatic Telephone System Maintenance Man - 115
116 - Dredgeman - 116
117 - Marine Fireman - 117
118 - Small Boat Operator - 118
120 - Meat or Dairy Inspector - 120
121 - Utility Repairman - 121
128 - Multilith or Multigraph Operator - 128
129 - Foundryman - 129
130 - Animation Artist - 130
131 - Film Editor, Motion Picture - 131
132 - Electrician, Motion Picture - 132
134 - Laboratory Technician, Motion Picture - 134
135 - Electric Locomotive Repairman - 135
136 - Model Maker - 136
137 - Projectionist, Motion Picture - 137
138 - Motorcycle Mechanic - 138
141 - Marine Oiler - 141
144 - Painter, General - 144
145 - Painter, Sign - 145
148 - Pattern Maker, Wood - 148
149 - Pharmacist - 149
150 - Crystal Grinder - 150
152 - Photographer - 152
158 - Microfilm Equipment Repairman - 158
160 - Physics Laboratory Assistant - 160
164 - Plumber - 164
165 - Lineman, Power - 165
166 - Powerman - 166
167 - Lithographic Pressman - 167
168 - Printer - 168
169 - Job Pressman - 169
170 - Engineering Aide (Designated Field) - 170
175 - Bandsman, Oboe - 175
176 - Bandsman, Bassoon - 176
181 - Signal Mechanic, Railway - 181
182 - High Voltage Lineman - 182
184 - Substation Operator - 184
185 - Railway Signal Operator - 185
187 - Repeaterman, Telephone - 187
188 - Duty Soldier II - 188
189 - Rigger - 189
191 - Rodman and Chainman, Surveying - 191
192 - Saddle and Harness Maker - 192
194 - Salvage Technician - 194
196 - Sanitary Technician - 196
197 - Submarine Cable Station Technician - 197
199 - Section Hand, Railway - 199
200 - Sewing Machine Operator - 200
201 - Sheet Metal Worker - 201
202 - Carpenter, Ship - 202
204 - Shoe Repairman - 204
205 - Shop Engineer, Railway - 205
206 - Sound Projector Repairman - 206
207 - Sound Recording Equipment Maintenance Man - 207
208 - Sound Recorder, Motion Picture - 208
209 - Submarine Cable Station Operator - 209
213 - Stenographer - 213
214 - Stonemason - 214
220 - Pump Operator - 220
227 - Surveyor - 227
228 - Survey and Instrument Man - 228
229 - Medical Equipment Maintenance Technician - 229
230 - Surveyor, Topographic - 230
232 - Switchboard Installer-Repairman, Manual - 232
234 - Tailor - 234
235 - Teamster - 235
236 - Telegraph Operator - 236
237 - Teletype Operator - 237
238 - Lineman, Telephone & Telegraph - 238
239 - Teletype Mechanic - 239
240 - Tire Rebuilder - 240
242 - Toolroom Keeper - 242
243 - Geodetic Computer - 243
246 - Cargo Gear Mechanic - 246
250 - Veterinary Technician - 250
252 - Foreman, Warehouse - 252
256 - Welder, Combination - 256
258 - Substation Electrician - 258
259 - Well Driller - 259
261 - Wire Chief, Telephone and Telegraph - 261
262 - Occupational Counselor - 262
263 - Psychiatric Social Worker - 263
264 - X-Ray Technician - 264
265 - Yardmaster - 265
267 - Translator - 267
270 - Cooper - 270
271 - Longshoreman - 271
272 - Key Punch Machine Operator - 272
274 - Writer, Military Subjects - 274
275 - Classification Specialist - 275
279 - Legal Clerk - 279
281 - Third Rail Repairman - 281
282 - Office Machine Serviceman - 282
283 - Athletic Instructor - 283
285 - Cameraman, Animated Motion Picture - 285
286 - Motion Picture Production Technician - 286
287 - Sound Editor, Motion Picture - 287
288 - Playwright - 288
289 - Personnel Consultant Assistant - 289
290 - Personnel Technician - 290
292 - Chemist - 292
293 - Chemical Engineer - 293
296 - Artist - 296
301 - Investigator - 301
302 - Machine Operator (designated machine) - 302
304 - Electric Motor Repairman - 304
309 - Telephone Operator - 309
316 - Automobile Serviceman - 316
319 - Construction Equipment Mechanic - 319
320 - Interpreter - 320
322 - Refrigeration Mechanic - 322
329 - Lumberjack - 329
337 - Foreman, Automotive Repair Shop - 337
333 - Instrument Repairman, Electrical - 333
341 - Shop Maintenance Mechanic - 341
342 - Master Mechanic - 342
345 - Truck Driver, Light - 345
348 - Parts Clerk, Automotive - 348
356 - Foreman, Labor - 356
358 - Glassblower - 358
359 - Construction Machine Operator - 359
365 - Optician - 365
366 - Orthopedic Mechanic - 366
371 - Purchasing Agent - 371
373 - Sales Clerk - 373
378 - Motorcyclist - 378
381 - Watch Repairman - 381
383 - Fire Fighter - 383
384 - Installer, Toll Telephone and Telegraph - 384
387 - Cartographer - 387
400 - Tabulating Machine Operator - 400
401 - High Voltage Cable Splicer - 401
405 - Clerk-Typist - 405
407 - Sound Mixer, Motion Picture - 407
409 - Medical Technician - 409
411 - Chemical Laboratory Assistant - 411
413 - Motor Inspector - 413
415 - Electrician, Sound Transmission - 415
422 - Podiatrist - 422
425 - Tabulating Machine Repairman - 425
432 - Bandsman, Clarinet - 432
433 - Bandsman, Cornet or Trumpet - 433
434 - Bandsman, Bass Drum - 434
435 - Bandsman, Snare Drum - 435
436 - Bandsman, Euphonium or Baritone - 436
437 - Bandsman, Flute or Piccolo - 437
438 - Bandsman, French Horn - 438
439 - Bandsman, Saxophone - 439
440 - Bandsman, Trombone - 440
441 - Bandsman, Tuba - 441
442 - Entertainment Specialist - 442
449 - Process Background Supervisor - 449
452 - Optometrist - 452
454 - Diver - 454
455 - Diver's Helper - 455
456 - Calker - 456
457 - Shop Clerk - 457
458 - Dog Trainer - 458
459 - Sawmill Machine Operator - 459
462 - Forest Products Tallyman - 462
464 - Millwright, Sawmill - 464
466 - Foreman, Logging - 466
470 - Cargo Checker - 470
473 - Winch Operator - 473
477 - Mechanic, Marine Engine - 477
478 - Ship Fitter - 478
479 - Still Operator - 479
484 - Entomology Technician - 484
485 - Petroleum Storage Technician - 485
486 - Safety Inspector - 486
487 - Petroleum Pumping Equipment Repairman - 487
502 - Administrative NCO - 502
505 - Ammunition NCO - 505
506 - Portable Power Generator Repairman - 506
509 - Bombardier - 509
510 Information Center Operator - 510
511 - Armorer - 511
514 - Radar Crewman (designated set) - 514
518 - Ground Aircraft Observer - 518
521 - Basic - 521
522 - Duty Soldier I - 522
526 - Balloon Crewman - 526
527 - Antiaircraft Range Section NCO - 527
528 - Airplane Hydraulic Mechanic - 528
529 - Wrecker Crewman - 529
530 - Salvage Repair NCO - 530
533 - Demolition Specialist - 533
535 - Balloon Gas Handler - 535
538 - Voice Interceptor (designated language - 538
542 - Communications Chief - 542
543 - Radio Intelligence Control Chief - 543
546 - Coxswain, Mine Yawl - 546
547 - Master, L Boat - 547
548 - Fabric and Dope Mechanic - 548
550 - Airplane Woodworker - 550
552 - Control Tower Operator - 552
555 - Airplane Sheet Metal Worker - 555
539 - Glider Mechanic - 539
560 - Pigeoneer - 560
563 - Horse Artillery Driver - 563
564 - Special Assignment - 564
565 - Pack Driver - 565
566 - Duty NCO - 566
571 - Electrician, Harbor Defense - 571
572 - Seacoast Gun Data Computer - 572
573 - Welder, Aircraft - 573
574 - Bombsight and Automatic Pilot Repairman - 574
575 - Remote Control Turret Repairman - 575
576 - Flash Ranging Observer - 576
577 - Survey and Instrument NCO, Field Artillery - 577
578 - Observation Station Operator, Coast Artillery - 578
579 - Casemate Electrician - 579
580 - Remote Control Turret Mechanic Gunner - 580
581 - Signal Supply Technician - 581
582 - Aerial Mine Technician - 582
583 - Engineer Supply Technician - 583
586 - Sound Ranging Observer - 586
590 - Duty Soldier III - 590
591 - Foreman, Fumigation and Bath - 591
593 - Link Trainer Mechanic - 593
597 - Antiaircraft Artillery Machine Gun Crewman, SP - 597
598 - Antiaircraft Artillery NCOP, Sp Weapons - 598
601 - Antiaircraft Artillery Automatic Weapons Crewman - 601
604 - Light Machine Gunner - 604
605 - Heavy Machine Gunner - 605
607 - Light Mortar Crewman - 607
608 - Gun Crewman, Coast Artillery - 608
609 - Leather and Canvas Worker - 609
610 - Antitank Gun Crewman - 610
611 - Aerial Gunner - 611
612 - Airplane Armorer-Gunner - 612
615 - Chief Balloon Rigger - 615
617 - Altitude Chamber Technician - 617
618 - Balloon Rigger - 619
620 - Parachute Rigger and Repairman - 620
622 - Finance Technical Clerk - 622
623 - Finance Typist clerk - 623
624 - Finance Clerk - 624
625 - Officer Candidate - 625
629 - Student - 629
631 - Intelligence NCO - 631
633 - Fire Control Electrician, Antiaircraft (automatic weapons) - 633
634 - Fire Control Electrician, Antiaircraft (gun) - 634
635 - Searchlight Electrician - 635
639 - Balloon Armorer - 639
641 - Field Lineman - 641
645 - Fire Control Instrument Operator, Field Artillery - 645
647 - Radio Repairman, Aircraft Equipment - 647
648 - Radio Repairman - 648
649 - Radio Repairman, Fixed Station - 649
650 - Telephone Switchboard Operator - 650
656 - Submarine Mine Loader - 656
657 - Medical Aidman - 657
658 - Link Trainer Instructor - 658
659 - Instructor (Designated Subject) - 659
660 - Tank Mechanic, Minor Maintenance - 660
662 - Aerial Torpedo Mechanic - 662
665 - Fuel Cell Repairman - 665
667 - Message Center Clerk - 667
669 - Military Policeman, Occupied Territory - 669
670 - Master Gunner, Coast Artillery - 670
671 - Master Gunner, Antiaircraft (gun) - 671
673 - Medical NCO - 673
674 - Message Center Chief - 674
677 - Military Policeman - 677
678 - Power Turret and Gunsight Mechanic - 678
681 - Power Turret and Gunsight Repairman - 681
683 - Bombsight Mechanic - 683
684 - Airplane Power Plant Mechanic - 684
685 - Airplane Electrical Mechanic - 685
686 - Airplane Instrument Mechanic - 686
687 - Airplane Propeller Mechanic - 687
688 - Tow Target Reel Operator - 688
689 - Airplane Cable Mechanic - 689
691 - Flexible Gunnery Trainer Operator-Mechanic - 691
692 - Height Finder Observer - 692
700 - Veterinary Ambulance Orderly - 700
703 - Coxswain, Radio Target Boat - 703
706 - Fumigation and Bath Man - 706
709 - Traffic Analyst (Radio) - 709
710 - Stable Sergeant - 710
712 - Packer, Animal - 712
713 - Packmaster - 713
714 - Mine Supply Maintenance Technician - 714
719 - Oxygen & Acetylene Plant Operator - 719
722 - Submarine Mine Planter - 722
724 - Range Section Operator, Coast Artillery - 724
727 - Water Supply Technician - 727
729 - Pioneer - 729
731 - Smoke Generator Operator - 731
732 - Amphibian Tractor Driver - 732
733 - Reconnaissance Car Crewman - 733
735 - Full-Track Driver - 735
737 - Flight Engineer - 737
738 - Intercept Operator, G - 738
739 - Intercept Operator, J - 739
740 - Radio Operator, Intermediate Speed - 740
745 - Rifleman - 745
746 - Automatic Rifleman - 746
747 - Airplane and Engine Mechanic - 747
748 - Airplane Mechanic-Gunner - 748
750 - Airplane Maintenance Technician - 750
754 - Radio Mechanic, AAF - 754
756 - Radio Operator, AAF - 756
757 - Radio Operator-Mechanic-Gunner, AAF - 757
759 - adio Operator, CNS - 759
760 - Radio Operator, AACS - 760
761 - Scout - 761
762 - Airplane Engine Repairman - 762
763 - Searchlight Crewman - 763
765 - Visual Signalman - 765
766 - Radio Operator, High Speed, Manual - 766
768 - Control Center Technician - 768
769 - Chief Storekeeper, Railway - 769
770 - Airplane Pilot - 770
772 - Liaison Pilot - 772
773 - Service Pilot - 773
775 - Radar Mechanic, Ground Equipment (Designated Set) - 775
776 - Radio Operator, Low Speed - 776
777 - Radio Operator, High Speed, Automatic - 777
778 - Radio Mechanic, AACS - 778
782 - Weather Equipment Technician - 782
784 - Weather Observer - 784
786 - Toxic Gas Handler - 786
787 - Weather Forecaster - 787
790 - Weather Observer-Teletype Technician - 790
791 - Air Operations Specialist - 791
792 - Radio Repairman, Single Channel Teletype - 792
797 - Amphibian Truck Mechanic (DUKW) - 797
798 - Transmitter Attendant, Fixed Station - 798
799 - Intercept Operator, Fixed Station - 799
801 - Cryptographic Repairman (designated equipment) - 801
802 - Artillery Mechanic, Minor Maintenance - 802
803 - Bugler - 803
804 - Camouflage Technician - 804
805 - Cryptographic Technician - 805
807 - Cryptographic Code Compiler - 807
808 - Cryptanalysis Technician - 808
809 - Decontaminating Equipment Operator - 809
812 - Heavy Weapons NCO - 812
814 - Operations NCO - 814
815 - Ordnance Supply NCO - 815
817 - Pontoneer - 817
819 - Commissary Steward - 819
820 - Subsistence NCO - 820
821 - Quartermaster Supply Technician - 821
822 - Utilities NCO - 822
824 - Mess Sergeant - 824
825 - Medical Supply NCO - 825
826 - AAF Supply Technician - 826
832 - Master Gunner, Antiaircraft - 832
833 - Artillery Mechanic, Antiaircraft (automatic weapons) minor maintenance - 833
834 - Artillery Mechanic, Antiaircraft (gun) minor maintenance - 834
835 - Supply Clerk - 835
836 - Sound Recorder, Field Artillery - 836
837 - Amphibian Track Vehicle Mechanic - 837
838 - Seaman, Landing Craft - 838
839 - Marine Engineman - 839
841 - Artillery Mechanic, Antiaircraft (self-propelled) minor maintenance - 841
842 - Radar Operator, AN/TPQ (designated model) - 842
843 - Radar Operator, AN/TPT (designated model) - 843
844 - Gun Crewman, Light Artillery - 844
845 - Gun Crewman, Heavy Artillery - 845
846 - Portable Power Generator Operator - 846
847 - Prosthetic Dental Supply Clerk - 847
848 - Parts Clerk, Armament - 848
849 - Radar Mechanic, Troop Carrier - 849
850 - Radar Mechanic, Night Fighter - 850
851 - Radar Mechanic, Beacon - 851
852 - Radar Mechanic, RCM - 852
853 - Radar Mechanic, Navigation - 853
854 - Radar Mechanic, Sea Search - 854
855 - Dental Technician - 855
856 - Radar Mechanic, Sea Search (Lab) - 856
858 - Medical Laboratory Technician - 858
859 - Pharmacy Technician - 859
860 - Radar Mechanic (Gee) - 860
861 - Surgical Technician - 861
862 - Radar Mechanic (IFF) - 862
863 - Radar Mechanic (GCA) - 863
864 - Gun Crewman, Medium Artillery - 864
866 - Radar Observer, Sea Search - 866
867 - Radar Mechanic, Bombardment - 867
868 - Radio-Teletype Mechanic - 868
869 - DF Evaluator - 869
870 - Chemical NCP - 870
893 - Facsimile Operator - 893
894 - Facsimile Technician - 894
899 - Director Repairman, Electrical, Heavy Antiaircraft Artillery - 899
901 - Munitions Worker - 901
903 - Small Arms Weapons Mechanic - 903
905 - Mechanic, Engine, Wheel Vehicle (Gasoline) - 905
906 - Mechanic, Chassis, Wheel Vehicle - 906
907 - Mechanic, Turret - 907
908 - Mechanic, Chassis, Track Vehicle - 908
909 - Mechanic, Engine, Track Vehicle - 909
911 - Airplane Armorer - 911
912 - Electrician, Automotive - 912
913 - Artillery Mechanic, Light - 913
914 - Artillery Mechanic, Heavy - 914
915 - Artillery, Mechanic, Heavy Antiaircraft - 915
917 - Director Repairman, Mechanical, Heavy Antiaircraft Artillery - 917
918 - Fire Control Repairman, Light Anti-aircraft Artillery - 918
919- Control System Repairman, Heavy Antiaircraft Artillery - 919
921 - Height Finder Repairman - 921
922 - Instrument Repairman, Fire Control - 922
923 - Welder, Armor Plate - 923
924 - Bomb Salvage Technician - 924
925 - Aircraft Engineering Technician - 925
926 - Mechanic, Fuel Induction - 926
927 - Amphibian Transportation NCO - 927
931 - Truck Driver, Heavy - 931
932 - Special Vehicle Operator - 932
933 - Instrument Landing Equipment - 933
934 - Amphibian Truck Driver - 934
938 - AAF Gunnery Instructor - 938
939 - Aerial Photographer-Gunner - 939
940 - Aerial Photographer - 940
941 - Camera Technician - 941
942 - Radiosonde Operator - 942
945 - Photographic Laboratory Technician - 945
946 - Searchlight NCO - 946
948 - Radar Mechanic, Ground Loran - 948
949 - Ammunition Renovator - 949
950 - Wire Repairman, VHF - 950
951 - Radio Repairman, VHF - 951
952 - Radio Repairman, Gun-laying Equipment (designated set) - 952
953 - Radio Repairman, Reporting Equipment (designated set) - 953
955 - Radar Repairman, Airborne Equipment (designated set) - 955
956 - Airplane Carburetor Equipment (designated set) - 956
957 - Airplane Electrical Instrument Mechanic - 957
958 - Airplane and Engine Electrical Accessories Repairman - 958
959 - Airplane Mechanical Instrument Repairman - 959
960 - Remote Control Turret Mechanic - 960
961 - Airplane Gyro instrument Repairman - 961
962 - Optical Instrument Repairman - 962
964 - Airplane Supercharger Repairman - 964
965 - Mechanic, Automotive, Wheel Vehicle (Third Echelon) - 965
966 - Mechanic, Automotive, Track Vehicle (Third Echelon) - 966
967 - Air Transportation Technician - 967
968 - Mine Detector Operator - 968
969 - Link Celestial Navigation Trainer Mechanic - 969
970 - Link Celestial Navigation Trainer Operator - 970
973 - Chief Artillery Mechanic - 973
974 - Radar Repairman, AN/TPT (designated model) - 974
978 - Artillery Mechanic, Light Antiaircraft - 978
979 - Chemical Warfare Man, General - 979
993 - Radio Mechanic, PQ Target Airplane - 993
994 - Servo Mechanic, PQ Target Airplane - 994
1076 - Observation Draftsman - 1076
1531 - Gun Crewman, Pack Artillery - 1531
1607 - Heavy Mortar Crewman - 1607
1645 - Range Section Operator, Antiaircraft - 1645
1648 - Radio Repairman, AN/MRQ (designated model) - 1648
1684 - Airplane Power Plant Mechanic-Gunner - 1684
1685 - Airplane Electrical Mechanic-Gunner - 1685
1736 - Light Tank Crewman - 1736
1766 - Radio Operator, AN/MRQ (designated model) - 1766
1812 - Light Weapons NCO - 1812
1907 - Gyrostabilizer Mechanic - 1907
2601 - Antiaircraft Artillery Gun Crewman - 2601
2736 - Medium Tank Crewman - 2736
2750 - Aerial Engineer - 2750
2756 - Radio Operator and Mechanic, AAF - 2756
2867 - Radar Observer-Mechanic, Bombardment - 2867
2967 - Flight Traffic Clerk - 2967
3601 - Antiaircraft Artillery Automatic Weapons Crewman, SP - 3601
3736 - Amphibian Tank Crewman - 3736
6709 - Traffic Analyst, G - 6709
8709 - Traffic Analyst, J - 8709