Military abbreviations: U

A glossary of military-based abbreviations, acronyms and initials used throughout the First World War, the Second World War and through to present day. The abbreviations are associated with various different nations, primarily the United Kingdom but also including, India, South Africa, USA, New Zealand and Australia. Abbreviations also have a strong focus on various armed forces such as the British Army, Royal Navy and Royal Air Force. Use the browse prefix below to navigate to glossaries beginning with a specific letter.

Contents:  A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z
Abbreviation Definition 1 Definition 2 (if applicable)
UK
United Kingdom
UNRRA
United Nations Resettlement and Rehabilitation Administration
UNWCC
United Nations War Crime Commission
U/S
Unserviceable
USAAF
United States Army Air Forces (up to 1947)
USAF
United States Air Force (from 1947)
USAFE
United States Air Forces Europe
USFA
United States Forces Austria
USN
United States Navy
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