List of initialisms, acronyms ("words made from parts of other words, pronounceable"), and other abbreviations used by the government and the military of the United States. Note that this list is intended to be specific to the United States government and military—other nations will have their own acronyms.
0K – Zero Killed (pronounced OK, as the expression that everything is okay)
1LT – First Lieutenant (U.S. Army) (USAF uses "1st Lt")
2LT – Second Lieutenant (U.S. Army) (USAF uses "2d Lt")
2IC – Second In Command
1SG – First Sergeant (E-8 Army)
A – Analog
A1C – Airman First Class (USAF E-3)
A2C2 – Army Airspace Command And Control
A-3 – (Operations Directorate (COMAFFOR))
A-5 – (Plans Directorate (COMAFFOR))
AA – Anti-Aircraft
AA – Armed Forces America
AA – Assembly Area
AA – Assessment Agent
AA – Avenue Of Approach
AAA – Army Audit Agency
AAA – Antiaircraft Artillery
AAA – Arrival And Assembly Area
AAA – Assign Alternate Area
AAAD – Airborne Anti-Armor Defense
AAAS – Amphibious Aviation Assault Ship
AABB – American Association of Blood Banks
AABWS – Amphibious Assault Bulk Water System
AAC – Activity Address Code
AACG – Arrival Airfield Control Group
AADC – Area Air Defense Commander
AADP – Area Air Defense Plan
AA&E – Arms, Ammunition, And Explosives
AAEC – Aeromedical Evacuation Control Team
AAFC – Australian Air Force Cadets (Australia)
AAFES – Army and Air Force Exchange Service
AAFIF – Automated Air Facility Information File
AAFS – Amphibious Assault Fuel System
AAFSF – Amphibious Assault Fuel Supply Facility
AAGS – Army Air-Ground System
AAI – Air-To-Air Interface
AAM – Air-To-Air Missile
AAMDC – US Army Air And Missile Defense Command
AAOE – Arrival And Assembly Operations Element
AAOG – Arrival And Assembly Operations Group
AAP – Allied Administrative Publication
AAP – Assign Alternate Parent
AAR – After Action Report
AAR – After Action Review
AAS – Army Apprentice School (Australia)
AAST – Aeromedical Evacuation Administrative Support Team
AAT – Automatic Analog Test
AAT – Aviation Advisory Team
AAU – Analog Applique Unit
AAV – Amphibious Assault Vehicle
AAW – Antiair Warfare
AB – Airbase
AB – Airman Basic (USAF E-1)
ABCA – American, British, Canadian, Australian Armies Program
ABCS – Army Battle Command System
ABD – Airbase Defense
ABV – Assault Breacher Vehicle (U.S. Army)
ABFC – Advanced Base Functional Component
ADOS – Active Duty, Operational Support
ADSW – Active Duty, Special Work
AE – Armed Forces Europe
AEW&C – Airborne Early Warning And Control
AFI – Awaiting Further Instruction/Air Force Instruction (requirement guide)
AFMC – Armed Forces Medical College
AFOQT – Air Force Officer Qualifying Test
AFOSI – United States Air Force Office of Special Investigations
AFSC – Air Force Specialty Code
AHA – Ammunition Holding Area
AIM – Airborne Intercept Missile (U.S. Military)
AIPD – Army Institute For Professional Development
AIS - Automated Information System
AIT – Advanced Individual Training (U.S. Army)
Amn – Airman (USAF E-2)
ALCON – All Concerned (U.S. Military)
AMU – Aircraft Maintenance Unit
AMXG – Aircraft Maintenance Group
AMXS – Aircraft Maintenance Squadron
AOL – Absent Over Leave (U.S. Navy)
AO – Area Of Operations
A&P – Administrative And Personnel
AP – Armed Forces Pacific
AP – Armor-Piercing
APC – Armored Personnel Carrier
APFSDS – Armor-Piercing Fin-Stabilized Discarding Sabot
APO – Army Post Office; See Also FPO
APPN – Appropriation Number (U.S. Military)
APRT – Army Physical Readiness Test (U.S. Army)
ARCENT/TUSA US Army Forces Central Command (CENTCOM)/Hq Third US Army (TUSA)
ARPANET – Advanced Research Projects Agency Network (e.g., 1969 to 1989; antecedent of the information superhighway; now DARPA)
ARM – Anti-Radar Missile
ARM – Anti-Radiation Missile
ARMS – Automated Recruit Management System (U.S. Military)
ARMS – Aviation Resource Management System (USAF)
ART – Alarm Response Team (USAF)
ARVN – Army Of The Republic Of (South) Viet Nam (U.S. Military)
ASAP – Army Substance Abuse Program (U.S. Military)
ASAP – As Soon As Possible
ASEAN – Association Of South East Asian Nations
ASM – Air-To-Surface Missile
ASCM – Anti-Ship C Missile
ASV – Anti-Surface Vessel (airborne radar)
ASVAB – Armed Services Vocational Aptitude Battery
ASW – Anti-Submarine Warfare
ATC – Air Training Corps
ATC – Air Traffic Control
ATFU – Ate The Fuck Up (not squared away)
ATO – Air Tasking Order
ATO – Antiterrorism Officer
ATRRS – Army Training Requirements And Resources System
AWACS – Airborne Warning and Control System
AWOL – Absent Without Leave
BAMCIS – Begin planning Arrange Recon Make the plan Complete the plan Issue the order Supervise (US Marine Corps)
BAH – Basic Allowance for Housing
BAR – Browning Automatic Rifle
BAU – Behavioural Analysis Unit
BCD – Battlefield Coordination Detachment
BCD – Bad Conduct Discharge (aka Big Chicken Dinner)
BCG – Birth Control Glasses (U.S. Military Slang)
BCT – Basic Combat Training (U.S. Army)
BDF – Barbados Defence Force (Barbados)
BDU – Battle Dress Uniform (U.S. Military)
Be – Beriev (Russian)
BEA – Budget Execution Authority (U.S. Navy)
BFT – Blue Force Tracker (U.S. Military)
BG – Bodyguard
BGHR – By God He's Right (U.S Military)
BLUF – Bottom Line Up Front (US Military)
BMNT – Begin Morning Nautical Twilight (U.S Army)
BN – Battalion (U.S. Army)
BDE – Brigade (U.S. Army)
BOHICA – Bend Over Here It Comes Again (US Military Slang)
BRAC – Base Realignment And Closure
BRAT (American)– Born Raised And Transferred (American usage, refers to dependent children of military personnel) Usually Pronounced "Military Brat" (Or "Air Force BRAT", or Army "Brat", Navy "Brat" etc.).
BRAT (British)– British RegimentAttachedTraveler (British military usage, may have been the original usage, which was later adapted to the American military: Means "child that travels with a soldier") Usually pronounced "Military Brat" or "Base Brat".
BUB – Battle Update Brief
BVR – Beyond Visual Range (USAF)
BX – Base Exchange (USAF)
BZ – spoken "Bravo Zulu", meaning "congratulations, job well done"
C1 – Command
C2 – Command And Control
C3 – Command Control And Communication
C4IR – Command Control Communication Computers Intelligence And Recognition
CAC – Common Access Card (U.S. DoD, pron. "cac")
CAG – Commander, Air Group (U.S. Navy, pron. "cag")
CAG – Civil Affairs Group. Term used for military members assigned to assist civilian governments with restoring infrastructure (All U.S. branches, pron. "cag")
CAGE – Commercial and Government Entity
CALL – Center for Army Lessons Learned
CAPT – Captain (US Navy, USCG O-6)
Capt – Captain (USMC, US Army, USAF O-3)
CAS – Close Air Support
CASEX – Coordinated Anti-Submarine EXercise
CASEVAC – Casualty Evacuation
CAT – Combat Application Tourniquets
CBRN – Chemical Biological Nuclear Radiological
CBU – Cluster Bomb Unit
CCIR – Commanders Critical Information Requirements
CCP – Casualty Collection Point
CDAT – Computerized Dumb Ass Tanker (M1 Abrams Crewmen)
CDIAC – Carbon Dioxide Information Analysis Center
CDRUSPACOM Commander United States Pacific Command
CENTCOM – Central Command (U.S. Military)
CF – Cluster Fuck (always pronounced phonetically "Charlie Foxtrot")
CH – Cunt Hair (a unit of measurement)
CHU – Containerized Housing Unit
Chief – Chief Warrant Officer
CIA – Central Intelligence Agency
CIB – Combat Infantry Badge
CIC – Command Intelligence Center (U.S. Navy)
CINCLANT – Commander-in-chief, Atlantic Forces (U.S. Navy before 2002)
CINCLANTFLT – Commander-in-chief, Atlantic Fleet (U.S. Navy before 2002)
CINCPAC – Commander-in-chief, Pacific Forces (U.S. Navy before 2002)
CIWS – Close-In Weapon System
CMSgt – Chief Master Sergeant (USAF E-9; highest AF enlisted rank)
CMSAF – Chief Master Sergeant of the Air Force (USAF E-9 – Senior Enlisted Member)
CO – Commanding Officer
COA – Course of Action
COB – Chief Of the Boat (Chief Petty Officer in charge of the Boat usually a Master Chief (USN Submariner Terminology))
COCOM – Combatant Commander
CODELS – Congressional Delegations
Col – Colonel
COMINT – Communications Intelligence
COMPACFLT – Commander, Pacific Fleet (U.S. Navy)
COMSEC' – Communication Security
CONUS – Continental United States (U.S. military, pron. "cone-us")
CONUSA – Continental United States Army (numbered Armies of U.S. military)
CORDS – (U.S. military, Vietnam era)
COP – Combat Out Post
CoS – Chief of Staff
COT – Commissioned Officer Training
CPL – Corporal (U.S. Army and Marine Corps E-4)
CPO – Chief Petty Officer (USCG/USN E-7)
CPT – Captain (US Army O-3)
CP – Check Point (Usually Numbered i.e. "CP1")
CPX – Command Post Exercise
CQB – Close Quarters Battle
CRC – CONUS Replacement Center (a military processing center at Fort Benning, Georgia, US)
CSM – Command Sergeant Major (U.S. Army E9 highest Army enlisted rank))
CSAR – Combat Search And Rescue
CT – Counter-terrorism Team
CTR – Close Target Reconnaissance
CUB – Commander Update Brief
CVN – Nuclear-powered Aircraft Carrier (NOTE: the V comes from the expression "heavier than air flying machine")
CWO – Chief Warrant Officer
CZN – Nuclear-powered Airship Carrier (NOTE: the Z comes from the use of the word Zeppelin although non-Zeppelin airships would also be transported on a CZN)
DA – Defence Attaché
DAC – Department of the Army Civilian
DAGR – Defense Advanced GPS Receiver
DARPA – Defense Advanced Research Projects Agency (U.S. Military)
DC3 – Department of Defense Cyber Crime Center
DCAA – Defense Contract Audit Agency
DCMA – Defense Contract Management Agency
DEVGRU – the United States naval special warfare DEVelopment GRoUp
DFAC – Dining Facility (U.S. Military)
DFAS – Defense Finance and Accounting Service (U.S. Military)
D.I.A – Defensive Intelligence Agency
DINFAC – Dining Facility (U.S. Military)
DISA – Defense Information Systems Agency
DLB – Dead Letter Box
DMDC – Defense Manpower Data Center
DME – Depot Maintenance Enterprise (U.S. Military)
DMEA – Defense Microelectronics Activity
DMS – Defense Message System (U.S. Military)
DMZ – Demilitarized Zone
DOA – Dead on Arrival
DoDAAC – Department of Defense Activity Address Code (U.S. Military)
DoDAF – Department of Defense Architectural Framework (U.S. Military)
DoDIC – Department of Defense Identification Code (U.S. Military)
DOP – Drop-Off Point
DPMs – Disruptive Pattern Material
DRT – Dead Right There; wounded in such a way as to indicate immediate and/or unavoidable death; often used as a sarcastic form of the civilian acronym DOA (Dead On Arrival)
DTO – Daily Tasking Order
DTRA – Defense Threat Reduction agency
DZ – Drop Zone
E&E – Escape and Evade
EA – Electronic Attack
ECP – Entry Control Point
EDCSA – Effective Date of Change of Strength Accountability (obsolete for U. S. Army)
EI – Engineering and Installation
EIS – Engineering and Installation Squadron, Environmental Impact Statement
EI SIT – Engineering and Installation Site Implementation Team
EKIA- Enemy Killed in Action
ELINT – Electronic Intelligence
EMI – Extra Military Instruction
ENS – Ensign (US Navy junior officer rank, O-1)
EOD – Explosive Ordnance Disposal
EOS – End of Service
EP – Electronic Protection
EPW – Enemy Prisoner of War
ERV – Emergency Rendezvous
ETA – Estimated time of arrival
ETS – Estimated Termination of Service
EUCOM – European Command (U.S. Military)
EW – Electronic Warfare (comprises EA, EP)
Exfil – Exfiltration (Opposite of infiltration; exiting undetected)
FA – Field Artillery
FAK – First Aid Kit
FAR – Federal Acquisition Regulation
FBCB2 – Force XXI Battlefield Command Brigade and Below
FBI – Federal Bureau of Investigation
FEBA – Forward Edge of the Battle Area
FFE – Fire for effect
FIDO – FIre Direction Officer
FIGMO – Fuck It, Got My Orders
FIST – Fire Support Team
FISTer – Member of a Fire Support Team
FIST-V – Fire Support Team Vehicle
FISINT – Foreign Instrumentation Signals Intelligence
FISHDO – Fuck It, Shit Happens, Drive On
FitRep – Fitness Report
FLOT – Forward Line of Troops
FLOTUS – First Lady of the United States (U.S. – see POTUS)
FM – Field Marshal; more commonly "Field Manual"
FMC – Fully Mission Capable
FNG – Fucking New Guy
FO – Forward Observer
FO – Foxtrot Oscar (i.e. Fuck Off) (US/UK Forces)
FOB – Forward Operating Base
FOD – Foreign Object Damage (U.S.)
FOD – Foreign Object Debris (U.S.)
FPO – Fleet Post Office; See also APO
FSA – Force Structure Allowance
FSTE – Foreign Service Tour Extension
FTUS – Full Time Unit Specialist
FUBAR – Fouled Up Beyond All Recognition or Fucked Up Beyond All Repair
FYSA – For Your Situational Awareness
FYI – For Your Information
G1 – General Staff Level office for Personnel and Manpower (Division and Above)
G2 – General Staff Level office for Military Intelligence (Division and Above)
G3 – General Staff Level office for Operations and Plans (Division and Above)
G4 – General Staff Level office for Logistics (Division and Above)
G5 – General Staff Level office for Military/Civil Affairs (Division and Above)
G6 – General Staff Level office for Signal and Communication (Division and Above)
G7 – General Staff Level office for Training and Exercises (Division and Above)
G8 – General Staff Level office for Force Development and Analysis (Division and Above)
G9 – General Staff Level office for Civil Operations (Division and Above)
GBU – Guided Bomb Unit
GEN – General
GI – Government Issue
GIG – Global Information Grid
GIGO – Garbage In Garbage Out
GM – Gone Mersault
GO – General Officer
GOCO – Government owned, contractor operated
GPMG – General Purpose Machine Gun
GPS – Global Positioning System
GS – General Schedule
HALO – High Altitude Low Opening (Airborne)
HAHO – High Altitude High Opening
HAAMS – High Altitude Airdrop Missions
HBL – Holiday Block Leave (U.S. Army)
HE – High Explosive
HEAT – High Explosive Anti-Tank warhead
HEP – High Explosive, Plastic (US usage)
HESH – High Explosive Squash Head (British anti-tank round)
HMAS – Her Majesty's Australian Ship (Australia)
HMCS – Her Majesty's Canadian Ship (Canada)
HMFIC – Head Motherfucker In Charge – colloquialism for the highest-ranking person present; more commonly used by NCO's than by officers (U.S. Military)
HMMWV – High Mobility Multipurpose Wheeled Vehicle (U.S. Military) (Pronounced Humvee)
HMNZS – Her Majesty's New Zealand Ship (New Zealand)
HMS – Hans Majestäts Skepp (His Majesty's ship, Sweden)
HMS – Her Majesty's Ship (Royal Navies such as Royal British Navy) (His Majesty's Ship if King)
Hr.Ms – His/Her Dutch Majesty's Ship (Dutch Royal Navy ship)
HOMSEC – Homeland Security
HRAP – Hometown Recruiter Assistance Program
HQ – Headquarters
HHB – Headquarters and Headquarters Battery
HHC – Headquarters and Headquarters Company
HHT – Headquarters and Headquarters Troop
HUMINT – Human Intelligence
HVI – High Value Individual
HVT – High Value Target
HYT – High Year Tenure
IAF – Indian Air Force
IAF – Israeli Air Force
ICBM – Intercontinental Ballistic Missile
ICE – Individual Carrying Equipment
ID – IDentification
IED – Improvised Explosive Device
IFAK – Individual First Aid Kit
IFF – Identification Friend or Foe
IFF – Introduction to Fighter Fundamentals (USAF)
IG – Inspector General (US Military)
IFV – Infantry Fighting Vehicle
IN – Infantry
INSCOM – United States Army Intelligence and Security Command
Il – Ilyushin
Interpol – International Criminal Police Organization
ISO – Inter School Course
ISR – Intelligence, Surveillance, and Reconnaissance
IYAAYAS – If You Ain't AMMO, You Ain't Shit
JA – Judge Advocate [General]
JAFO – Just Another Fucking Observer
JAG – Judge Advocate General
JDAM – Joint Direct Attack Munition
JSF – Joint Strike Fighter
JATO – Jet-assisted Take Off
JETDS – Joint Electronics Type Designation System
JSAM – Joint Service Achievement Medal
JSTARS – Joint Surveillance Target Attack Radar System
JSOC – Joint Special Operations Command
JTF – Joint Task Force
JEEP – Just Enough Essential Parts
KATUSA – Korean Augmentation Troops to the United States Army
KIA – Killed In Action
KISS – Keep It Simple, Stupid – USAF
KP – Kitchen Police or Kitchen Patrol
KBO – Keep Buggering On
LAAD – Low Altitude Air Defense
LAV – Land Artillery Vehicle
LCDR – Lieutenant Commander (US Navy)
LCPL – Lance Corporal (US Marines)
LES – Leave and Earnings Statement
LP – Listening Post
LP/OP – Listening Post Observation Post
LPC – Leather Personnel Carrier (boot)
LGOP – Little Group Of Paratroopers
LPO – Leading Petty Officer (US Navy)
LT – Lieutenant
LTC or Lt Col – Lieutenant Colonel
LTG or Lt Gen – Lieutenant General
LTJG – Lieutenant, Junior Grade (US Navy)
LUP – Lying-Up Point
LZ – Landing Zone
MACV/SOG – Military Assistance Command Vietnam / Special Operations Group
MAJ – Major
MARCORSYSCOM – MARine CORps SYStems COMmand (U.S. Military)
MARCENT Marine Corps Central Command
MARFORRES – MARine FORces REServe (U.S. Marine Corps)
MARSOC – Marine Corps Forces Special Operations Command
MAV – Micro Air Vehicle
MAW – Maximum Allowable Weight
MBT – Main Battle Tank
MC 326/2 – ″NATO Medical Support Principles and Policies″, approved by Military Committee, second revision.
MCCS – Marine Corps Community Services (also known by the humorous backronym Marine Corps Crime Syndicate)
MCEN – Marine Corps Enterprise Network (U.S. Military)
MCEITS – Marine Corps Enterprise Information Technology Service (U.S. Military)
MCPO – Master Chief Petty Officer (USCG/USN E-9)
MedEvac – Medical Evacuation
MFA – Ministry of Foreign Affairs
MG – Machine Gun
MG – Major General
MI – Military Intelligence
Mi – Mil Moscow Helicopter Plant (Russian)
MIA – Missing In Action
MICV – Mechanized Infantry Combat Vehicle
MiG – Mikoyan-Gurevich (Russian)
MILCON – Military Construction
MK – Mark
MK – Machinery Technician (U.S. Coast Guard)
MLRS – Multiple Launch Rocket System
MMFD – Miles and Miles of F...ing Desert (unofficial report in Gulf War)
MOA – Military Operating Area (USAF Airspace)
MOAB – Massive Ordnance Air Blast bomb, also known as "Mother Of All Bombs". (U.S. military)
MOAC – Mother of All Coffee (Green Bean Coffee)
MOB – Main Operating Base
MOBCOM – MOBile COMmand
MOPP – Mission Oriented Protective Posture
MPDS – Military Planning Data Allowance
MRAP – Mine Resistant Ambush Protected
MRE – Meal Ready to Eat (U.S. Military)
MRX – Mission Rehearsal Exercise
MSG – Master Sergeant (US Army E-8)
MSgt – Master Sergeant (USAF E-7)
MTOE – Modified Table Of Organizational Equipment
MTS+ – Movement Tracking System Plus
MSDC+ – Marine Science Diving Club (Diving Club Of Hasanudin University)
NAFTA – North American Free Trade Agreement
NAS – Naval Air Station
NATO – North Atlantic Treaty Organisation
NCIS – Naval Criminal Investigative Service (U.S. Navy)
NAVAIR – Naval Air Systems Command
NAVCENT – Naval Forces Central Command (U.S. Navy)
NAVOCEANO – Naval Oceanographic Office
NBACC – National Biodefense Analysis and Countermeasures Center
NCI – National Cancer Institute
NCO – Non-Commissioned Officer
NCOIC – Non-Commissioned Officer in Charge
NCOES – Non-Commissioned Officer Education System
ND – Negligent Discharge
NEFF – New Equipment Fielding Facility
NIBC National Interagency Biodefense Campus
NICBR – National Interagency Confederation for Biological Research
NMC – Not Mission Capable
NME – Non-Mission Essential
NMCI – Naval Marine Corps Intranet (U.S. Navy)
NNMSA – Non-Nuclear Munitions Storage Area
NORAD – North American Aerospace Defense Command
NPDES – National Pollutant Discharge Elimination System
NS – Network Services
NSA – National Security Agency
NSW – Naval Special Warfare
NSWDG – Naval Special Warfare Development Group
NUB – Non-Useful Body / Nuclear Unqualified Bitch (U.S. Nuclear Navy)
OBE – Overcome By Events (DoD)
OCONUS – Outside Continental United States
OCS – Officer Candidate School
ODA – Operational Detachment-Alpha (the standard 12-man team composed of US Army Special Forces operators)
ODU – Operational Dress Uniform (U.S. Coast Guard)
OIC – Officer in Charge
OIG - Office of Inspector General
OM – On the Move (Normally just spelled out Oscar Mike)
O&M, MC – Operations & Maintenance, Marine Corps (U.S. Navy)
O&M, N – Operations & Maintenance, Navy (U.S. Navy)
OODA – Observe, Orient, Decide, and Act
OP – Observation Post
ORM – Operational Risk Management
OSM – Oh Shit Moment (U.S. Marine Corps)
OSP – On Site Procurement
OPORD – Operations Order
OPSEC – Operations Security
OTF – Out There Flapping (Airborne)
OTS – Officer Training School
OTV – Outer Tactical Vest
PACOM – Pacific Command
PCS – Permanent Change of Station
PDS – Permanent Duty Station (U.S. Military)
PDT – Pre-Deployment Training
PE – Plastic Explosive
PFC – Private First Class (U.S. Military)
PFM – Pure Fuckin Magic (U.S. Military)
PFT – Physical Fitness Test
PII – Personally Identifiable Information or Personal Identity Information
PL – Platoon Leader (U.S. Army)
PLT – Platoon (U.S. Army)
PMC – Partially Mission Capable
PME – Professional Military Education
PMS – Planned Maintenance Schedule (U.S. Navy)
PNG – Passive Night Goggles
PO – Post Office
PO1 – Petty Officer 1st Class (USCG/USN E-6)
PO2 – Petty Officer 2nd Class (USCG/USN E-5)
PO3 – Petty Officer 3rd Class (USCG/USN E-4)
POBCAK – Problem Occurs Between Chair And Keyboard
POL – Petroleum Oil & Lubricants (U.S. Air Force)
POC – Point Of Contact
POTUS – President of the United States
POG – Person Other than Grunt (All non-combat arms job fields i.e. any MOS or CMF other than infantry, cavalry, armor, and artillery; among infantrymen, refers to anyone other than infantry or Special Forces)
POW – Prisoner Of War
POV – Privately Owned Vehicle
PPG – PT Parade Games
PPPPPPP – Proper Prior Planning Prevents Piss Poor Performance
PRP – Personnel ReliabilityProgram
PRP – Pretty Retarded Program
PRT – Provincial Reconstruction Team
PRT – Physical Readiness Training (U.S. Army)
PT – Physical Training
PTB – Powers That Be
PV2 – Private 2nd class (U.S. Army E-2)
PVT – Private (U.S. Army and Marine Corps E-1)
PX – Post Exchange (U.S. Army)
RAAF – Royal Australian Air Force (Australia)
RAF – Royal Air Force (UK)
RAN – Royal Australian Navy (Australia)
RATO – Rocket Assisted Take Off
RCSC – Royal Canadian Sea Cadets (Canada)
REMF – Rear Echelon Mother Fucker
RFL – Response Force Leader
RMC – Royal Military College of Canada (Canada) in Kingston, Ontario
RN – Royal Navy (UK)
ROE – Rules Of Engagement
ROMA Data, Right Out of My Ass Data. Unverifiable created data (different from SWAG)
ROWPU – Reverse Osmosis Water Purification Unit
RNZAF – Royal New Zealand Air Force (New Zealand)
ROZ – Restricted Operating Zone
RPG – Rocket-Propelled Grenade
RPM – Rounds per minute
RS – RatShit (Australia – related to US – Unserviceable)
RSS – Regional Security System (Caribbean)
RTB – Return To Base
RV – Rendez-Vous
RTO – Radio Telephone Operator
SWAK- Sealed With A Kiss
SA – Seaman Apprentice (USCG/USN E-2)
SA – Situation Awareness
SAS – Special Air Service (British special forces)
SBS – Special Boat Service (British special forces)
SAAS – Standard Army Ammunition System (U.S. Army)
SAM – Surface-to-Air Missile
SARSS – Standard Army Retail Supply System (U.S. Army)
SCIF – Sensitive Compartmented Information Facility
SCO – Squadron Commander (Squadron as used in the U.S. Army Regimental System)
SCOTUS – Supreme Court of the United States
SCPO – Senior Chief Petty Officer (USCG/USN E-8)
SD – "Status Destroyed" or "Salty Dog". (Equipment that is written off as unrepairable and unsalvageable. )
SEAC – Senior Enlisted Advisor to the Chairman of the Joint Chiefs of Staff
SEAL – Sea, Air and Land (US Navy SEALs)
SERE – Survival, Evasion, Resistance and Escape
SFC – Sergeant First Class (U.S. Army E7)
SGM – Sergeant Major (U.S. Army E9 – Sometimes referred to as Staff Sergeant Major)
SGT – Sergeant (U.S. Army E5) (U.S. Marines uses Sgt)
SITREP – Situation Report
SOCCENT – Special Operations Command CENTCOM
SJA – Staff Judge Advocate
SLAM – Standoff Land Attack Missile
SMA – Sergeant Major of the Army (U.S. Army E9 – Senior Enlisted Member)
SMEAC – Situation Mission Execution Admin/logistics Command/signal (US Marine Corps basic knowledge)
SMSgt – Senior Master Sergeant (USAF E-8)
SN – Seaman (USCG/USN E-3)
SNAFU – Situation Normal: All Fucked/Fouled Up
SOCOM – United States Special Operations Command
SOFA – Status of Forces Agreement
SOP – Standard Operating Procedures
SOS – Shit On a Shingle, or creamed chipped beef on toast.
SPC – Specialist (U.S. Army E-4)
SR – Seaman Recruit (USCG/USN E-1)
SrA – Senior Airman (USAF E-4)
SRR – Special Reconnaissance Regiment (British special Forces)
SSDD – Same Shit Different Day
SSDDBS – Same Shit Different Day Bigger Shovel
SSG – Staff Sergeant (US Army E-6)
SSgt – Staff Sergeant (US Air Force E-5) (U.S. Marines E-6)
SOL – Shit Out of Luck (US Army)
SOLJWF – Shit Out of Luck and Jolly Well Fucked (U.S. Marines)
STOVL – Short Takeoff, Vertical Landing
SUSFU – Situation Unchanged, Still Fucked Up
SWAG – Scientific Wild Ass Guess
TACP – Tactical Air Control Party (USAF)
TAD – Temporary Additional Duty (U.S. Military)
TAO – Tactical Action Officer (U.S. Military)
TBD – To Be Determined
TC3 – Tactical Combat Casualty Care
TCCC – Tactical Combat Casualty Care
TDPFO – Temporary Duty Pending Further Orders (U.S. Military)
TDY – Temporary Duty (U.S. Military)
TF – Task Force
TFOA – Things Falling Off Aircraft
TG6 – Task Group 6 (group designation for NZ SAS – NZ Army)
TOC – Tactical Operations Center
TIC – Troops In Contact
TSgt – Technical Sergeant (USAF E-6)
TU – Tits Up (Dead, Inoperable), a.k.a. "tango uniform"
TARFU – Things Are Really Fucked Up, or Totally And Royally Fucked Up
UA – Unauthorized Absence
UAS – Unmanned Aerial System
UAV – Unmanned Aerial Vehicle
UCAV – Unmanned Combat Air Vehicle
ULLS – Unit Level Logisitics System (U.S. Army)
UMA – Unit Mobilization Assistor
UN – United Nations
US – Unserviceable
USSS – United States Secret Service
USAF – United States Air Force
USAFA – the United States Air Force Academy at Colorado Springs, Colorado
USAFE – United States Air Forces in Europe
USAMRICD – United States Army Medical Research Institute of Chemical Defense
USAMRIID – United States Army Medical Research Institute of Infectious Disease
USAMRMC – United States Army Medical Research and Materiél Command
USAMRAA – United States Army Medical Research Acquisition Activity
USA PATRIOT Act – Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act
USAREC – US Army REcruiting Command
USAREUR – US Army European Command
USMA – the United States Military Academy (US Army) at West Point, New York
USMC – United States Marine Corps
USN – United States Navy
USNA – the United States Naval Academy (US Navy) at Annapolis, Maryland
USO – United Service Organizations (U.S. Military)
USR – Unit Status Report
UUV – Unmanned Underwater Vehicle
UXB – Unexploded Bomb (bomb disposal; British)
UXO – Unexploded Ordnance
VBIED – Vehicle-Borne Improvised Explosive Device
VDM – Visual Distinguishing Mark
VFD – Volunteer Fire Department
VFR – Volunteer Fire and Rescue (or in Aviation Visual Flight Rules)
VPOTUS – Vice President of the United States
WIA – Wounded In Action
WO1 – Warrant Officer 1
WSA – Weapons Storage Area
WMD – Weapons of Mass Destruction
WILCO – Will Comply
XO – Executive Officer
YGBSM – You Gotta Be Shitting Me
List of U.S. government and military acronyms Wikipedia (Text) CC BY-SA