Military Abbreviations and Acronyms

1. OS
   Operational Support
2. OS
   Orderly Sergeant
3. OS
   Ordinary Seaman
4. OS
   Ordnance Services
5. OS
   Cryptologic Officer
6. OS
   General Staff
7. OS
   Observation-Scout
8. OS
   Observation Scout
9. OS
   Observation Squadron
10. OS
    Ofqice of Secretary
11. OS
    Operating and Support
12. OS
    Operationally Suitable
13. OS
    Operating Stocks
14. OS
    Operations Squadron
15. OS
    Operational Suitability
16. OS
    Option Study
17. OS
    Outdander Studios
18. OS-21
    Observing System 21St Century
19. OS-JTF
    Open Systems-Joint Task Force
20. OS&T
    Office Uf Science and Technology

Last updated: April 7, 2022 — Total entries: 103,098