U.S. Army World War II
Military Occupational Specialties
(By Number)

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

Bibliography:
TM 12-427: Military Occupational Classification of Enlisted Personnel – (12 July 1944) -- WARNING! 75~ MB!