D-Day Introduction June 6, 1944 will be remembered for many reasons. Some may think of it as a success and some as a failure. The pages following this could be used to prove either one. The only sure thing that I can tell you about D-Day is this: D-Day, June 6, 1944 was the focal point of the greatest and most planned out invasion of all time. The allied invasion of France was long awaited and tactfully thought out. For months the allied forces of millions trained in Britain waiting for the Supreme Commander of the Allied Expeditionary Forces, General Eisenhower to set a date. June 6, 1944 was to be the day with the H-hour at 06:30. Aircraft bombed German