| Acronym | Meaning |
 | AAF | Army Airfield |
 | AAFES | Army And Air Force Exchange Service |
 | AAM | Army Achievement Medal; Air-to-Air Missile (see ATAM); Automated Acquisition Module |
 | AAR | After-Action Review (formerly After-Action Report); Air-to-Air Receive; Air-to-Air Refueling; Aircraft Accident Report |
 | ABN | Airborne |
 | AC | Aircraft Commander; Active Component; Alternating Current; Aircraft; Aircraft Carrier; Air Conditioning; Air Controller; Aircrew; Armament Computer; Associate Contractor |
 | ACU | Army Combat Uniform; Assault Craft Unit; Annunciator Control Unit; Automatic Calling Unit; Administrative Control Unit |
 | AIT | Advanced Infantry Training; Advanced Individual Training (specialty Training Post-BCT); Aircraft Interface Tester; Automated Interactive Target; AUTODIN Interface Terminal; Automated Identification Technology |
 | ALICE | All-purpose Lightweight Individual Carrying Equipment |
 | AMF | Army Modular Force |
 | AN | Army/Navy; See JETDS |
 | ANCOC | Advanced Noncommissioned Officer Course |
 | AO | Accounts Office; Acquisition Objective; Action Officer; Aircraft Operator; Oiler (underway Replenishment); Administration Officer; Air Officer; Area Of Operations; Aviation Ordnance Person |
 | AOC | Air And Space Operations Center; Air Operations Center; Army Operations Center; Air/Oil Cooler; Approach On Course; Auxiliary Output Chips; Aviation Ordnance Chief; Area Of Concentration |
 | AOO (AO) | Area Of Operations; Aviation Ordnance Officer |
 | AOR | Area Of Responsibility; Allowance Overrides; Annual Operating Requirement; Area Of Operations; Replenishment Oiler (underway Replenishment) |
 | 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 |
 | APFT | Army Physical Fitness Test |
 | ARCAM | Army Reserve Component Achievement Medal |
 | ARCOM | Army Commendation Medal |
 | ARFORGEN | Army Force Generation |
 | ASAP | As Soon As Possible (pronounced AY-sap) |
 | ASCC | Army Service Component Command |
 | ASI | Additional Skill Identifier |
 | ASOC | Air Support Operations Center |
 | AST | Area Support Team |
 | ASW | Anti-Submarine Warfare; Average Surface Wind |
 | ATAM | Air-To-Air Missile |
 | AVF | All-Volunteer Force |
 | AWOL | Absent Without Official Leave. Not At One's Place Of Duty |
 | AWR | Air Worthiness Release |
 | B/N | Bombardier/Navigator. The Observer On A US Air Force Fighter-bomber. |
 | BAH | Basic Allowance For Housing (formerly BAQ) |
 | BAQ | Basic Allowance For Quarters; Basic Aircraft Qualification |
 | BCD | Bad Conduct Discharge; Binary-Coded Decimal; Battlefield Coordination Detachment |
 | BCT | Basic Combat Training (familiarly Basic Training Or Basic) |
 | BDU | Battle-Dress Uniform; Bomb Dummy Units |
 | BEQ | Bachelor Enlisted Quarters |
 | BLUF | Bottom Line Up Front (i.e. |
 | BNCOC | Basic Noncommissioned Officer Course |
 | BOG | Beach Operations Group |
 | BOQ | Bachelor Officers' Quarters |
 | BRM | Basic Rifle Marksmanship |
 | BSB | Base Support Battalion |
 | BWT | Battlefield Weather Team |
 | BX | Base EXchange. Air Force Name For A PX (see Below.) |
 | CAB | Combat Aviation Brigade; Cabin; Centralized Accounting & Billing (Navy); Contract Adjustment Board; Cost Analysis Brief; Combat Action Badge |
 | CAC | Common Access Card; Community Activity Center |
 | CAPE | Corrective Action Through Physical Exercise |
 | CASEVAC | CASualty EVACuation |