Governmental & Military Abbreviations and Acronyms

1. MMLFN
   MACHINIST'S MATE (GENERAL) FIREMAN
2. MMLFR
   MACHINIST'S MATE (GENERAL) FIREMAN RECRUIT
3. MMMB1
   MACHINIST'S MATE (MOTOR BOAT) PETTY OFFICER FIRST CLASS
4. MMMB2
   MACHINIST'S MATE (MOTOR BOAT) PETTY OFFICER SECOND CLASS
5. MMO1
   MACHINIST'S MATE (OPTICIAN) PETTY OFFICER FIRST CLASS
6. MMO2
   MACHINIST'E MATE (OPTICIAN) PETTY OFFICER SECOND CLASS
7. MMR3
   MACHINIST'S MATE (REFRIGERATION MECHANIC) 3RD CLASS PETTY OFFICER
8. MMRFA
   MACHINIST'S MATE (REFRIGERATION MECHANIC) FIREMAN APPRENTICE
9. MMRFN
   MACHINIST'S MATE (REFRIGERATION MECHANIC) FIREMAN
10. MMRFR
    MACHINIST'S MATE (REFRIGERATION MECHANIC) FIREMAN RECRUIT
11. MMS1
    MACHINIST'S MATE (SHOP MACHINIST) 1ST CLASS PETTY OFFICER
12. MMS3
    MACHINIST'S MATE (SHOP MACHINIST) 3RD CLASS PETTY OFFICER
13. MMSRS
    MACHINIST'S MATE (SHIP REPAIR-INSIDE)
14. MMW1
    MACHINIST'S MATE (WATCHMAKER)
15. MMW2
    MACHINIST'S MATE (WATCHMAKER)
16. MN1
    MINEMAN 1ST CLASS PETTY OFFICER
17. MN2
    MINEMAN 2ND CLASS PETTY OFFICER
18. MNSN
    MINEMAN SEAMAN
19. MOMM1
    MOTOR MACHINIST'S MATE 1ST CLASS PETTY OFFICER
20. MOMM2
    MOTOR MACHINIST'S MATE 2ND CLASS PETTY OFFICER

Last updated: May 24, 2020 — Total entries: 74,797