| Abbreviation | Definition |
|---|---|
| GEN | Generator |
| GENADMIN | General Admin (Message) |
| GENESIS | Generic Smart Indirect Fire Simulation |
| GEN-II | Generation II Soldier |
| GENSER | General Service (message category) |
| GENSER | General Service (Message) |
| GENSUP | General Supply |
| GENTEXT | General Text |
| GEO | Geographical Extensions of Operations |
| GEO | Geosynchronous Earth Orbit |
| GEO | Global Engagement Operations |
| GEOCODE | Geographic Code |
| GEOFILE | Geolocation Code File |
| GEOFILE | GEO-location FILE |
| GEOFILE | Standard Specified Geographic Location File |
| GEOINT | Geospatial Intelligence |
| GEOLOC | GEOgraphic LOCation |
| GEOLOC | Geographic Location Code |
| GEOREF | Geographic Reference |
| GEOREF | World GEOgraphic REFerence System |