| Abbreviation | Definition |
|---|---|
| G3A | Air Operations Element of the G3 Section |
| G3OPNS | Current Operations Element of the G3 Section |
| G4 | Logistics Staff at Corps and Division |
| G-4 | Army or Marine Corps Component Logistics Staff Officer (Army Division or Higher Staff, Marine Corps Brigade or Higher Staff) |
| G-4 | Assistant Chief of Staff For Logistics |
| G5 | Civil Affairs at Corps and Division |
| G6 | Assistant Chief of Staff for Information Management |
| G-6 | Army or Marine Corps Component Command, Control, Communications, and Computer Systems Staff Officer |
| G-6 | Assistant Chief of Staff For Communications |
| G-6 | Generate a Gesture of Goodwill, Give a Gift of Gratitude |
| G-7 | Information Operations Staff Officer (ARFOR) |
| GA | General Armageddon |
| GA | General of the Army |
| GA | GIS (Graphics Information System) Analysis |
| GA | Grand Admiral |
| GA | Tabun, A Nerve Agent |
| GAA | General Agency Agreement |
| GAA | Geospatial Intelligence Assessment Activity |
| GAARNG | Georgia Army National Guard |
| GAAS | Gallium Arsenide |