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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


The British Army’s Royal Army Chaplains Department. All units of battalion size had their own Chaplain to care for the troops’ spiritual and moral welfare.


A unit of the US Army whose members had undergone special training. On D-Day Rangers units landed on Omaha Beach and Point-du-Hoc. Similar to the British Commandos.

Resistance, The

Groups of men and women in parts of Europe occupied by Nazi Germany who fought against the Germans and gathered information to send to the Allies.


Ferry pontoons that carried men, vehicles and supplies ashore from ships out at sea. They were powered by outboard motors.


Royal Observer Corps. A civil defence organisation manned by volunteers who kept lookout for enemy aircraft over Britain. For D-Day some ROC personnel volunteered to sail onboard merchant ships as Seaborne Observers to identify aircraft and to prevent anti-aircraft gunners from firing at friendly aircraft.


The codename for dummy parachutists dropped over occupied France in the early hours of D-Day to confuse the Germans.