United States Amy Rank Abbreviations and Acronyms

1. CTM2
   CRYPTOLOGIC (MAINTENANCE BRANCH) PETTY OFFICER SECON CLASS
2. CTM3
   CRYPTOLOGIC (MAINTENANCE BRANCH) PETTY OFFICER THIRD CLASS
3. CTMCM
   CRYPTOLOGIC (MAINTENANCE BRANCH) MASTER CHIEF PETTY OFFICER
4. CTMSN
   CRYPTOLOGIC (MAINTENANCE BRANCH) SEAMAN
5. CTMSR
   CRYPTOLOGIC (MAINTENANCE BRANCH) SEAMAN RECRUIT
6. CTO1
   COMMUNICATIONS TECHNICIAN (COMMNICATIONS) PETTY OFFICER 1ST CLASS
7. CTO2
   Second Class
8. CTO3
   CRYPTOLOGIC (COMMUNICATIONS BRANCH) PETTY OFFICER THIRD CLASS
9. CTOCS
   CRYPTOLOGIC (COMMUNICATIONS BRANCH) SENIOR CHIEF PETTY OFFICER
10. CTOSA
    CRYPTOLOGIC (COMMUNICATIONS BRANCH) SEAMAN APPRENTICE
11. CTOSA
    COMMUNICATIONS TECHNICIAN (COMMUNICATIONS BRANCH) SEAMAN APPRENTICE
12. CTOSN
    COMMUNICATIONS TECHNICIAN (COMMUNICATIONS BRANCH) SEAMAN
13. CTOSN
    CRYPTOLOGIC (COMMUNICATIONS BRANCH) SEAMAN
14. CTOSR
    COMMUNICATIONS TECHNICIAN (COMMUNICATIONS BRANCH) SEAMAN RECRUIT
15. CTOSR
    CRYPTOLOGIC (COMMUNICATIONS BRANCH) SEAMAN RECRUIT
16. CTRCM
    CRYPTOLOGIC (COLLECTION) MASTER CHIEF PETTY OFFICER
17. CTRCM
    COMMUNICATION TECHNICIAN (COLLECTION) MASTER CHIEF PETTY OFFICER
18. CTRSA
    COMMUNICATIONS TECHNICIAN (COLLECTION) SEAMAN APPRENTICE
19. CTRSA
    CRYPTOLOGIC (COLLECTION) SEAMAN APPRENTICE
20. CTRSN
    COMMUNICATIONS TECHNICIAN (COLLECTION) SEAMAN

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