D-Day Presentation
4,447 views · Published 3 November 2006 · 0:41 · Indexed 26 October 2026
Channel: GeneralPaccepa · 2006 · Howto & Style
By far, the best known D-Day is June 6, 1944 — the day on which the Battle of Normandy began — commencing the Western Allied effort to liberate mainland Europe from Nazi occupation during World War II. However, many other invasions and operations had a designated D-Day, both before and after Operation Overlord. D-Day was originally planned for June 5, 1944 but bad weather and heavy seas delayed that. The terms D-day and H-hour are used for the day and hour on which a combat attack or operation is to be initiated. They designate the day and hour of the operation when the day and hour have not yet been determined, or where secrecy is essential. There is but one D-day and one H-hour for all units participating in a given operation. When used in combination with figures, and plus or minus signs, these terms indicate the point of time preceding or following a specific action. Thus, H−3 means 3 hours before H-hour, and D+3 means 3 days after D-day. H+75 minutes means H-hour plus 1 hour and 15 minutes.
