U – utility

U/I – Unidentified 

UAE – United Arab Emirates

UAH - up-armored HMMWV (M-116)

UAV – unmanned aerial vehicle

UAV-SR – Unmanned Aerial Vehicle – Short Range

UDM – unit deployment manager (USAF)

UEx – Unit of Employment (Provides Battle Command at the tactical and lower levels)

UH – utility helicopter

UH-1N - … (helo)

UH-60 - … (helo)

UHAV – Up- Armored Humvee 

UK – United Kingdom

ULN – Unit Line Number

UMT – Unit Ministry Team

UN – United Nations

UNAMI – U.N. Assistance Mission – Iraq

UNDP – United Nation Development Program 

UNHCR – U.N. High Commission for Refugees

UNICEF – United Nations Children’s Fund

UNK - unknown

UNMOVIC - U.N. Monitoring, Verification, and Inspection Commission

UNSC – U.N. Security Council

UNSCR – U.N. Security Council Resolution

US or U.S. – United States

USA – United States of America; U.S. Army

USACAPOC – U.S. Civil Affairs & Psychological Operations Command (Army)

USACE _ United States Army Corp of Engineers

USAE – USA Environmental (contractors)

USAF – U.S. Air Force

USAID – U.S. Agency for International Development

USAJFKSWCS – United State Army John Fitzgerald Kennedy Special Warfare Center and School

USASFC – US Army Special Forces Command 

USC – United States Code

USCENTCOM  - U.S Central Command 

USCG – U.S. Coast Guard

USEMB – U.S. Embassy

USEMB – U.S. Embassy

USIA – United States Information Agency

USLO – US Liaison Office 

USMC – U.S. Marine Corps

USN – U.S. Navy

USTRANSCOM – United States Transportation Command

UTAM – Unattended Transient Acoustic MASINT System

UTO  - United Tajik Opposition 

UWOA – Unconventional Warfare Operational Area 

UXO -  Unexploded Ordnance

UXO – unexploded ordinance

UZB – Uzbekistan (country code)

VA – Vulnerability Assessment; Veterans Administration

VAP – Vulnerability Assessment Program

VAT – Vulnerability Assessment Team

VBIED -  Vehicle Borne Improvised Explosive Device (no driver-replaces “VCIED”)

VBIED - vehicle-based IED (mobile & suicide); Vehicle Borne Improvised Explosive Devise

VB-S - Victory Base-South

VBSS – Visit, Board, Search, Seizure 

VCD – Video CD

VCIED – vehicle-concealed IED (stationary & remote-controlled)

VCP – vehicle control point 

VETCAP – Veterinarian Civilian Assistance Program 

Vetted – A back ground investigation had been completed to ensure no Human Rights violations or other negatives 

VFR – Visual Flight Rule 

VHF – Very High Frequency

VIC - Vicinity

VIOP – Voice Over Internet Protocol

VOB – visitor operations bureau

VSI – very serious injury

VTC – Video Teleconference

VUL – vulnerability

W – West

WAC – weapons authorization …

WAN – Wide Area Network

WARNO – warning order

WD – White Devil 

WED, Wed – Wednesday

WFP – World Food Program 

WG – Working Group

White Forces – Iraqi Civilians (Neutral)

WIA - wounded in action

WILCO – will comply

WIS – Weapons Intelligence Section (GBR)

WMD – weapons of mass destruction

WO – Warrant Officer

WOT – War on Terror 

WPNS - Weapons

WSS – Weapons Surveillance System

WTEM – Weather, Terrain and Environmental Monitoring

WTPS – Water Treatment Plants 

WV – World Vision 

X, x – times (ex:  7x WIA)

XO – Executive Officer

YEM – Yemen (country code)