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D-Day produced thousands of code names, acronyms, abbreviations and many other strange and unusual terms and names!

We have compiled a list of some of the most common terms related to D-Day. If you think something is missing, please let us know.

# 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
"U"

U-boat

U-boat is English translation of the German word U-Boot, a shortening of Unterseeboot, literally ‘undersea boat’. On D-Day Allied naval and air forces patrolled the English Channel to prevent German U-boats from attacking the landing forces.

Ultra

The Allied codename for the intelligence taken from intercepts of the German Enigma signals. Ultra intelligence was given to senior commanders during the Battle of Normandy to help them to base their plans on what the Germans were doing.

Utah Beach

The codename for the western-most US landing beach on the east coast of the Cotentin Peninsula. On D-Day the landings were led by the US 4th Infantry Division.