| Abbreviation | Definition |
|---|---|
| ACAP | Advanced Composite AirFrame Program |
| ACAP | Area Communications Electronics Capability |
| ACAP | Army Career Alumni Program |
| ACAP | Army Career and Alumni Program |
| ACAP | Army Cost Analysis Position |
| ACAP | Assessment Correlation and Analysis Process |
| ACARS | Aircraft Calling And Reporting System |
| ACARS | Aircraft Communication Addressing and Reporting System |
| ACAS | Army Commissary Automated System |
| ACAS | Army Crisis Action System |
| ACAT | Acquisition Category |
| ACAT | Aeromedical Evacuation Command Augmentation Team |
| ACATS | Advanced Combat And Tactical Simulation |
| ACATS | Analytical Conflict And Tactical Simulation |
| ACATT | ADEA/CECOM Advanced Technology Test Bed |
| ACATT | Air Cadets Adventure Training Technical |
| ACAU | Automatic Calling/Answering Unit |
| ACAV | Armored Cavalry Assault Vehicle |
| ACAWS | Aircraft Area Weapon System |
| ACB | Air Combat Brigade |