United States Amy Rank Abbreviations and Acronyms

1. MUS3
   MUSICIAN 3RD CLASS PETTY OFFICER
2. NAVCAD
   NAVAL AVIATION CADET
3. NCOX
   NATIVE COXSWAIN
4. NF3
   NATIVE FIREMAN 3RD CLASS
5. NMATT1
   NATIVE MESS ATTENDANT 1ST CLASS
6. NMATT3
   NATIVE MESS ATTENDANT 3RD CLASS
7. NMM1
   NATIVE MACHINIST'S MATE PETTY OFFICER FIRST CLASS
8. NMM2
   NATIVE MACHINIST'S MATE 2ND CLASS
9. NSEA2
   NATIVE SEAMAN 2ND CLASS
10. NSEA3
    NATIVE SEAMAN 3RD CLASS
11. NW1
    NUCLEAR WEAPONSMAN PETTY OFFICER 1ST CLASSS
12. NW2
    NUCLEAR WEAPONSMAN PETTY OFFICER 2ND CLASSS
13. NW3
    NUCLEAR WEAPONSMAN PETTY OFFICER 3RD CLASSS
14. OFF STD
    Officer'S Steward
15. OILER
    Oiler
16. OS1
    OFFICER'S STEWARD 1ST CLASS (NON PETTY OFFICER)
17. OS1
    OPERATIONS SPECIALIST PETTY OFFICER 1ST CLASS
18. OT1
    OCEAN SYSTEMS TECHNICIAN PETTY OFFICER 1ST CLASS
19. OT3
    OCEAN SYSTEMS TECHNICIAN PETTY OFFICER 3RD CLASS
20. OTA1
    OCEAN SYSTEMS TECHNICIAN (AUTOMATIC) PETTY OFFICER 1ST CLASS

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