The GUSA had the most ranks of any of the GUS Military Branches. 1. * Soldier 2. * Watchman 3. * Petty Officer 3rd Class 4. * Petty Officer 2nd Class 5. * Petty Officer 1st Class 6. * Petty Officer 7. * Chief Petty Officer 8. * Senior Chief Petty Officer 9. * Master Chief Petty Officer 10. * Second Officer 11. * First Officer 12. * Officer 13. * Chief Officer 14. * Master Chief Officer 15. * Petty Ensign 16. * Ensign 17. * Chief Ensign 18. * Private Basic 19. * Private 20. * Private 1st Class 21. * Specialist 22. * Petty Corporal 23. * Corporal 24. * Petty Sergeant 25. * Staff Sergeant 26. * Technical Sergeant 27. * Senior Sergeant 28. * Third Sergeant