| Acronym | Meaning |
| TRM | Training Resource Model |
| MLRS | Multiple-Launch Rocket System |
| IOBC | Infantry Officer Basic Course |
| XO | Executive Officer. Officer Second-in-command To The CO. |
| IAW | In Accordance With |
| BSB | Base Support Battalion |
| DFAS | Defense Finance And Accounting System |
| PIR | Parachute Infantry Regiment |
| CBR | Chemical-Biological-Radiological (see NBC); Charger Battery Relay |
| DRU | Direct Reporting Unit |