List of U.S. government and military acronyms

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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)
  • 1LTFirst Lieutenant (U.S. Army) (USMC uses "1stLt" and USAF uses "1st Lt")
  • 2LTSecond Lieutenant (U.S. Army) (USMC uses "2ndLt" and USAF uses "2d Lt")
  • 2ICSecond In Command
  • 1SGFirst Sergeant (E-8 Army)
  • 777 – (Pronounced triple 7) Refers to the M777 howitzer, a towed 155 mm artillery weapon. It succeeded the M198 howitzer in the United States Marine Corps and United States Army in 2005. The M777 is also used by the ground forces of Australia, Canada, India and Saudi Arabia. It made its combat debut in the War in Afghanistan.






  • 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)
  • EHRS – Electronic Health Records (Software)
  • EI – Engineering and Installation
  • EIS – Engineering and Installation Squadron, Environmental Impact Statement
  • EIBExpert Infantry Badge
  • EI SIT – Engineering and Installation Site Implementation Team
  • EKIA – Enemy Killed in Action
  • ELINT – Electronic Intelligence
  • EMI – Extra Military Instruction
  • ENSEnsign (U.S. Navy junior officer rank, O-1)
  • EODExplosive Ordnance Disposal
  • EOS – End of Service
  • EP – Electronic Protection
  • EPR − Enlisted Performance Report
  • EPW – Enemy Prisoner of War
  • ERV – Emergency Rendezvous
  • ESSENCEElectronic Surveillance System for Early Notification of Community-based Epidemics (U.S. Military)
  • ETAEstimated time of arrival
  • ETS – Expiration Term of Service
  • EUCOMEuropean Command (U.S. Military)
  • EWElectronic Warfare (comprises EA, EP)
  • Exfil – Exfiltration (Opposite of infiltration; exiting undetected)



  • 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)
  • GBUGuided Bomb Unit
  • GENGeneral
  • GI – Government Issue
  • GIGGlobal Information Grid
  • GIGOGarbage In Garbage Out
  • GM – Gone Mersault
  • GOGeneral Officer
  • GOCO – Government owned, contractor operated
  • GPMGGeneral Purpose Machine Gun
  • GPSGlobal Positioning System
  • GSGeneral Schedule


















  • YGBSM – You Gotta Be Shitting Me

See also[edit]


  1. ^ US Army Termonology/82nd Airborne Division Termonology (late 1970s era)
  2. ^ "Assignment Incentive Pay".
  3. ^ a b c d US CENTCOM Command Structure
  4. ^ "ATFU - Ate The Fudge Up (polite form; military slang for someone constantly making mistakes)". Archived from the original on November 7, 2011.
  5. ^ Krietemeyer, George E. (2000). The Coast Guardsman's Manual (Ninth ed.). Naval Institute Press, Annapolis, Maryland. p. 380. ISBN 1-55750-468-7.
  6. ^ Wertsch, Mary E. (January 2006). Military Brats: Legacies of Childhood Inside the Fortress. ISBN 0-9776033-0-X.
  7. ^ Clifton, Grace, "Making the Case for the BRAT (British Regiment Attached Traveler)", British Educational Research Journal, Vol. 30, No. 3 2004
  8. ^ Adams, Leah; Kirova, Anna (2006). Global Migration and education. Mahwah, NJ: Lawrence Erlbaum Associates, Inc. pp. 263–64. ISBN 0-8058-5838-5.
  9. ^ "CASEX". Retrieved July 31, 2015.
  10. ^ "JAFO | Military Words for JAFO".
  11. ^ Graff, Garrett M. (January 8, 2021). "Behind the Strategic Failure of the Capitol Police". Politico. Retrieved November 7, 2021.
  12. ^ Staff Sergeant Thomas Brick (October 12, 2005). "Proper prior planning prevents pitifully poor performance". Air Force Print News. United States Air Force. Archived from the original on December 12, 2012. Retrieved November 7, 2021.
  13. ^ The dictionary definition of tits up at Wiktionary

External links[edit]