| Acronym | Meaning |
 | PIR | Parachute Infantry Regiment |
| OPORD | Operations Order |
| AST | Area Support Team |
| AAF | Army Airfield |
| ANCOC | Advanced Noncommissioned Officer Course |
| AC | Aircraft Commander; Active Component; Alternating Current; Aircraft; Aircraft Carrier; Air Conditioning; Air Controller; Aircrew; Armament Computer; Associate Contractor |
| AOO (AO) | Area Of Operations; Aviation Ordnance Officer |
| AAFES | Army And Air Force Exchange Service |
| TACSOP | TACtical Standard Operation Procedure. The ?game-plan? That Units Follow When Conducting Tactical Operations. Similar To Sports Team And ?secret? Plays |
| APC | Armored Personnel Carrier; Acquisition Professional Community; Accelerated Provision Concepts; Account Processing Code; Activity Process Codes; Agency Program Coordinator; Air Project Coordinator; Aerial Port Commander; Assign Pre-programmed Conference (l |
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