United States Amy Rank Abbreviations and Acronyms

1. MLDR
   Molder
2. MLFA
   MOLDER FIREMAN APPRENTICE
3. MLFN
   MOLDER FIREMAN
4. MLFR
   MOLDER FIREMAN RECRUIT
5. MLSR
   MOLDER (SHIP REPAIR) PETTY OFFICER THIRD CLASS
6. MM2
   MACHINIST'S MATE 2ND CLASS PETTY OFFICER
7. MM3
   MACHINIST'S MATE PETTY OFFICER 3RD CLASS
8. MMA2
   MACHINIST'S MATE (AVIVATION) PETTY OFFICER SECOND CLASS
9. MMC
   MACHINIST'S MATE CHIEF PETTY OFFICER
10. MMCBE
    First Class
11. MMCM
    MACHINIST'S MATE MASTER CHIEF PETTY OFFICER
12. MMCS
    MACHINIST'S MATE SENIOR CHIEF PETTY OFFICER
13. MMFA
    MACHINIST'S MATE FIREMAN APPRENTICE
14. MMFN
    MACHINIST'S MATE FIREMAN
15. MMFR
    MACHINIST'S MATE FIREMAN RECRUIT
16. MMGC
    MACHINIST'S MATE (GAS GENERATING) CHIEF PETTY OFFICER
17. MMKR
    BOILERMAKER
18. MML2
    MACHINIST'S MATE (GENERAL) PETTY OFFICER 2ND CLASS
19. MML3
    MACHINIST'S MATE (GENERAL) PETTY OFFICER 3RD CLASS
20. MMLC
    MACHINIST'S MATE (GENERAL) CHIEF PETTY OFFICER

Last updated: May 24, 2020 — Total entries: 3,362