| Abbreviation | Definition |
|---|---|
| ACTOR | Aerial Close Target Observation Report |
| ACTS | A Call To Serve |
| ACTS | Acquisition Control and Tracking System |
| ACTS | Advance Communications Technology Satellite |
| ACTS | Air Combat Training System |
| ACTS | Army Criteria Tracking System |
| ACTS | Automated Control of Trainees Sys |
| ACTS | Automated Control of Trainees System |
| ACTT | Aviation Combat Tactical Trainer |
| ACTUV | Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel |
| ACU | Air Control Unit |
| ACU | Arctic Command Unit |
| ACU | Area Common User |
| ACU | Army Comabt Uniform |
| ACU | Army Combat Uniform |
| ACU | Assault Craft Unit |
| ACUB | Army Compatible Use Buffer |
| ACUS | Area Common User System |
| ACUS | Army Common User System |
| ACV | Air Cushion Vehicle |