| Abbreviation | Definition |
|---|---|
| CA | Civil Affairs |
| CA | Classic Army |
| CA | Combat Arms |
| CA | Combat Assessment |
| CA | Combined Arms |
| CA | Commercial Activities |
| CA | Common Applications |
| CA | Communication Area |
| CA | Complete Annihilation |
| CA | Conditional Access |
| CA | Configuration Audit |
| CA | Contract Award |
| CA | Coordinating Altitude |
| CA | Cost Analysis |
| CA | Crewman's Associate |
| CA | Expansion Capability Assessment |
| CAA | Civil Air Augmentation |
| CAA | Combat Aviation Advisor |
| CAA | Combined Arms Agency |
| CAA | Command Arrangement Agreement |