| Abbreviation | Definition |
|---|---|
| ARRDATE | ARRival DATE |
| ARRED | Army Component of US REDCOM |
| ARRED | Army Readiness |
| ARRL | American Radio Relay League |
| ARRM | Army Range Requirements Module |
| ARRP | Army Regulation Reduction Program |
| ARRS | Aerospace Rescue & Recovery Service |
| ARRS | Aircraft Refueling and Rearming Study |
| ARRSE | The Army Rumour Service |
| ARRTC | Army Reserve Readiness Training Center |
| ARRW | Air-Launched Repid Response Weapon |
| ARRW | Air-Launched Repid Weapon |
| ARS | Action Request System |
| ARS | Acute Radiation Syndrome |
| ARS | Advanced Recovery System |
| ARS | Aerial Reconnaissance and Surveillance |
| ARS | Air Radio System |
| ARS | Air Rescue Service |
| ARS | Army Reserve Sustainment |
| ARS | Automated Response System |