| Abbreviation | Definition |
|---|---|
| GMA1 | nner's Mate (armorer) Petty Officer 1st Class |
| GMA1 | nner's Mate (aviation) 1st Class Petty Officer |
| GMA2 | Gunner's Mate (armorer) Petty Officer 2nd Class |
| GMA2 | Gunner's Mate (aviation) Petty Officer 2nd Class |
| GMA2 | nner's Mate (armorer) Petty Officer 2nd Class |
| GMA2 | nner's Mate (aviation) Petty Officer 2nd Class |
| GMA3 | Gunner's Mate (armorer) Petty Officer 3rd Class |
| GMA3 | Gunner's Mate (aviation) Petty Officer 3rd Class |
| GMA3 | nner's Mate (armorer) Petty Officer 3rd Class |
| GMA3 | nner's Mate (aviation) Petty Officer 3rd Class |
| GMAC | Gunner's Mate (armorer) Chief Petty Officer |
| GMAC | nner's Mate (armorer) Chief Petty Officer |
| GMASA | Gunner's Mate (armorer) Seaman Apprentice |
| GMASA | nner's Mate (armorer) Seaman Apprentice |
| GMASN | Gunner's Mate (armorer) Seaman |
| GMASN | nner's Mate (armorer) Seaman |
| GMASR | Gunner's Mate (armorer) Seaman Recruit |
| GMASR | nner's Mate (armorer) Seaman Recruit |
| GMC | Gunner's Mate Chief Petty Officer |
| GMC | nner's Mate Chief Petty Officer |