| Abbreviation | Definition |
|---|---|
| REEFER | Refrigerated or Cold Storage Unit |
| REEM | REserves EMbarked |
| REEV | Range Extended Electric Vehicle |
| REF | Rapid Equipping Force |
| REF | Referee |
| REF | Reference |
| REF | Reference(S) |
| REFLUPS | Resuscitation Fluids Production System |
| REFO | Real Estate Field Office |
| REFORGER | Return of Forces to Germany |
| REG | Regiment |
| REG | Registration |
| REG | Regular |
| REG | Regulation |
| REGO | Reinventing Government |
| REGT | Regiment |
| REI | Restricted Entry Interval |
| REJ | Radar Electronic Jamming |
| REJ | Rejected |
| REJASE | RE-using Junk As Something Else |