List of abbreviations, acronyms and initials related to military subjects such as modern armor, artillery, infantry, and weapons, along with their definitions.

A A&TWF – Acquisition and technology work force a – Army AA – Assembly area AA – Anti-aircraft AA – Aegis ashore AAA – Anti-aircraft artillery "Triple A" AAAV – Advanced Amphibious Assault Vehicle AAC – Army Air Corps AAD – Armored amphibious dozer AADC – Area air defense commander AAE – Army acquisition executive AAG – Anti-aircraft gun AAK – Appliqué armor kit (US) AAL – Additional authorization list AAN – Army after next AAP – Advance authority to procure AAPC – Advanced armoured personnel carrier (Turkiye) AARADCOM – Army Armament Research and Development Command AAR – After-action review AASLT – Air assault AAV – Amphibious assault vehicle AAV – Assault amphibious vehicle AAW – Anti-aircraft warfare AAWC – Anti-aircraft warfare coordinator AB – Air burst ABC – Atomic, biological, chemical (replaced by chemical, biological, radiological (CBR), and nuclear, biological, chemical (NBC)) ABC – Automatic brightness control ABCS – Automated battlefield control system AB(C) – Aviation battalion (combat) ABIT – Advanced built-in test ABM – Air-bursting munition ABM – Anti-ballistic missile ABMD – Aegis ballistic missile defense system ABMS – Air-bursting ammunition system ABN – Airborne ABNSOTD – Airborne and Special Operations Test Directorate ABRO – Army Base Repair Organization ABS – Aww-busting system ABS – Anti-lock braking system ABSP – Aegis ballistic missile defense (BMD) signal processor ABSV – Armoured battlegroup support vehicle ABU — Airman Battle Uniform ABV – Assault Breacher Vehicle A/C – Aircraft commander AC – Alternating current ACAwa – ATEC contracting activity ACA – Ammunition container assembly ACADA – Automatic chemical agent detector and alarm ACAVP – Advanced composite armoured vehicle platform (UK) ACB – Advanced capability build ACB/TI – Advanced capability baseline/technical insertion ACC – Army contracting command ACC – Aegis computer center ACC – Air Combat Command ACCE – Abrams/Crusader common engine ACCV – Armored cavalry cannon vehicle (US) ACD – Automated common diagrams ACE – Armored Combat Earthmover (US) ACEGIO – Advanced Conversion Equipment Group Input Output ACF – Acquisition Career Field ACF-TE – Acquisition Career Field-Test & Evaluation ACH – Advanced Combat Helmet (MICH TC-2000 Combat Helmet) ACIE – Army Clothing and Individual Equipment ACK – Acknowledge ACLOS – Automatic Command to Line of Sight ACM – Acoustic countermeasures ACOG – Advanced Combat Optical Gunsight ACOMMS – Acoustic communications ACP – Automatic Colt Pistol ACP – Alignment control panel ACPU – Aft central processing unit ACR – Advanced Combat Rifle ACR – Armored cavalry regiment ACRV – Armored command and reconnaissance vehicle ACS – Artillery communications system ACS – Aegis combat system ACS – Air control supervisor ACS – Anti-collision system ACSC – Aegis combat systems center ACTD – Advanced concept technology demonstration ACTEDS – Acquisition career training and education development system ACTS – Aegis combat training system ACU – Army Combat Uniform ACU – Antenna coupler unit ACV – Aardvark clearing vehicle ACV – Armored combat vehicle ACVT – Armored Combat Vehicle Technology Program (US) A/D – Analog to digital AD – Air defense ADA – Air defense artillery ADACS – Automated data collection system ADAM – Area denial artillery munition ADAMS – Air Defense Advanced Mobile System (US) ADAP – Advanced digital antenna production ADAP – Army designated acquisition programs ADATD – Air Defense Artillery Test Directorate ADATS – Air defense anti-tank system ADATS – Army Development and Acquisition of Threat Simulators ADC-A – Assistant Division Commander – Fire and Maneuver ADC-B – Assistant Division Commander – Combat Support ADEA – Army Development and Employment Agency ADF – Australian Defense Force ADG – Acoustic display generator ADI – Australian Defense Industries ADM – Advanced development model ADM – Acquisition decision memorandum (US) ADMAS – Advanced distributed modular acquisition system ADNS – Automated digital network system ADP – Automated data processing ADPE – Automated data processing equipment ADS – Advanced display system ADSS – ATEC decision support system ADTD – Air Defense Test Directorate AE – Action express AEC – Army evaluation center AECU – Antenna environmental control unit AEF – Allied expeditionary force AEP – Action entry panel AER – Alteration equivalent to repair AESA – Active electronically scanned array AETC – Air Education and Training Command AEW&C – Airborne early warning and control AEV – Armored engineer vehicle AF – Air Force AF – And following (as "in DDG-113 AF ships will receive the AMDR radar") AFB – Air Force Base AFA/ARA – Aerial field artillery/aerial rocket artillery (US, Vietnam war era attack helicopter batteries employing 2.75 in. FFAR) AFARV – Armored, forward area, re-arm vehicle (US) AFAS – Advanced Field Artillery System AFATDS – Advanced Field Artillery Tactical Data System AFC – Australian Flying Corps AFC – Army Futures Command AFCS – Automatic Fire-Control Systems AFD – Automatic Feeding Device AFDL – Advanced Flight Deck Lighting AFF – Active Fire-and-Forget AFFLQ – Active Fire-and-Forget with Laser Cueing AFFF – Aqueous Fire Fighting Foam (smothers fire cutting off oxygen) AFOTEC – Air Force Operational Test and Evaluation Center AFSC – Air Force Specialty Code AFSS – Advanced Fire Support System AFSV – Armored Fire Support Vehicle AFTADS – Advanced Field Artillery Tactical Data System AFV – Armored Family of Vehicles (US) AFV – Armored Fighting Vehicle AG – Assistant Gunner AGC – Automatic Gain Control AGF – Army Ground Forces AGL – Above Ground Level AGL – Automatic Grenade Launcher AGLS – Automatic Gun Laying System AGS – Armored Gun System (US) AGS – Advanced Gun System AGV – Assault Gun Vehicle AGVT – Advanced Ground Vehicle Technology Ah – Ampere hour AHA – Ammunition Handling Area AHC – Attack Helicopter Company (USA) AHE – Aircraft Handling Equipment AHS – Ammunition Handling System AHU – Air Handling Unit AI – Action Item AI – Area of Interest AIC – Air Intercept Controller (US Navy) AICS – Accuracy International Chassis System AICW – Advanced Individual Combat Weapon AIF – Australian Imperial Force (Australia, WWI or WWII) AIFS – Advanced Indirect Fire System AIFV – Armored Infantry Fighting Vehicle AIPS – Advanced Integrated Propulsion System (US) AIS – Automatic Identification System (US NAVY) AIS – Automated Information System AIT – Alteration Installation Team AIT – Advanced Information Technology AIT – Advanced Individual Training AITAS – ATRRS Internet Training Application System AK – Acknowledgement AKO – Army Knowledge Online AL&T – Acquisition, Logistics, and Technology ALAAVS – Advanced Light Armored/Amphibious Vehicle System (US) ALC – Advanced Land Combat (US) ALDT – Administrative and Logistics Down Time ALICE – All-purpose lightweight individual carrying equipment ALMC – U.S. Army Logistics Management College ALO – AEGIS Light Off ALS – Advanced Laying System ALS – Advanced Lighting System (flight deck) ALSV – Armored logistics support vehicle ALT – Armored launching turret ALWT – Advanced Lightweight Torpedo AM – Acquisition Manager AMBL – Air Maneuver Battle Lab AMC – United States Army Materiel Command AMCAC – United States Army Materiel Command Acquisition Center AMC – Advanced Mortar Carrier (Turkey) AMC – Air Mobility Command (US) AMCCOM – Armament Munitions and Chemical Command AMCOM – Aviation and Missile Command AMDBD – Army Medical Department Board AMEDD – Army Medical Department AMEDDC&S – Army Medical Department Center & School AMDR – Air and Missile Defense Radar AMDS – Anti-Missile Discarding Sabot AMF – Amphibische Mehrzweck-Fahrzeuge (multipurpose amphibious vehicle) AML – Automitrailleuse Légère (light armored car) AMLCD – Active-Matrix Liquid Crystal Display AMN – Afghanistan Mission Network AMOS – Advanced Mortar System AMPS – Afloat Master Planning System (US NAVY) AMPV – Armored Multi-Purpose Vehicle AMR – Anti-materiel rifle AMR – Automitrailleuse de Reconnaissance AMRAAM – Advanced Medium Range Air-to-Air Missile AMRDEC – Air and Missile Research, Development, and Engineering Center AMRWS – Advanced Multi-Role Weapon Station AMS – Armored Mortar System AMSAA – Army Materiel Systems Analysis Activity AMSEC – Army Modeling and Simulation Executive Council AMS-H – Advanced Missile System – Heavy AMSO – Army Modeling and Simulation Office AMX – Atelier de Construction d'Issy-les-Moulineaux ANAD – Anniston Army Depot ANR – Active Noise Reduction ANZAC – Australia and New Zealand Army Corps ANZUS – Australia New Zealand United States Treaty AO – Area of Operations AO – Authorizing Official AoA – Add-on Armor AoA – Avenue of Approach AODR – Authorizing Official Designated Representative AOI – Arab Organization for Industrialization AOP – Air observation post AOS – Add-on stabilization AOTR – Abbreviated Operational Test Report AP – Anti-Personnel AP – Armor-Piercing APA – Army Procurement Appropriation APAM – Anti-Personnel, Anti-Matériel APBC – Armor-Piercing Ballistic Cap APC – Army Personnel Centre APC – Armored Personnel Carrier APC – Armor-Piercing Capped APCBC – Armor-Piercing Capped Ballistic Cap APC-T – Armor-Piercing Capped – Tracer APCT-BF – Armor-Piercing Capped Tracer – Base Fuse APCNR – Armor-Piercing Composite Non-Rigid APCR – Armor-Piercing Composite Rigid APCRBC – Armor-Piercing Composite Rigid Ballistic Cap APDS – Armor-Piercing Discarding Sabot APDS-T – Armor-Piercing Discarding Sabot – Tracer APE – Amphibisches Pionier-Erkundungsfahrzeug (amphibious front-line reconnaissance vehicle) APEP – Armor-Piercing Enhancement Program APERS – Anti-Personnel APERS-T – Anti-Personnel Tracer APFIDS – Armor-Piercing Fragmentation Incendiary Discarding Sabot APFSDS – Armor-Piercing Fin-Stabilized Discarding Sabot APFSDS-T – Armor-Piercing Fin-Stabilized Discarding Sabot – Tracer APFSDS-P – Armor-Piercing Fin-stabilized Discarding Sabot - Practice APFSDS-DU – Armor-Piercing Fin-Stabilized Discarding Sabot - Depleted Uranium APG – Aberdeen Proving Grounds APGM – Autonomous Precision-Guided Munition APHC – Armor-Piercing Hard Core APHE – Armor-Piercing High-Explosive API – Armor-Piercing Incendiary API-T – Armor-Piercing Incendiary – Tracer APM – Anti-Personnel Mine APMI – Accelerated Precision Mortar Initiative APOD – Aerial Port Of Debarkation APS – Advanced Propulsion System APS – Artillery Pointing System APSE – Armor-Piercing Secondary Effect APSE-T – Armor-Piercing Secondary Effect – Tracer AP-T – Armor-Piercing – Tracer APTE – Abrams Power Train Evolution (US) APU – Auxiliary Power Unit APV – Armored Patrol Vehicle AR – ArmaLite rifle AR – Assault Rifle AR/AAV – Armored Reconnaissance/Airborne Assault Vehicle (US) ARB – Armored Robots ARBDD – Armored Robots for Bomb Detection and Disposal ARD – Anti-Reflective Device ARDEC – Armament Research, Development and Engineering Center ARDNOT – Automatic Day/Night Optical Tracker ARE – Atelier de Construction Roanne AREG – Army Regulation ARETS – Armor Remote Target System ARFORGEN – Army Force Generation ARL – Army Research Laboratory (US) ARM – Anti-Radiation Missile ARMAD – Armored and Mechanized Unit Air Defense ARMD – Armored ARMSCOR – Armament Manufacturing Corporation (South Africa) ARMVAL – Anti-armor Vehicle Evaluation (US) ARNG – Army National Guard AROC – Army Requirements Oversight Council ARP – Anti-Radiation Projectile ARP – Armored Repair Plates ARRADCOM – Armament Research and Development Command ARRV – Armored Repair and Recovery Vehicle