Quote Originally Posted by Jkarinen
This is a totaly pointless comment but gunna say it any ways D-day is another name for invasion day not exactly sure what it means but it was called operation husky or the invasion of normandy. There were several "D-Days" in the pacific and about 4 in the atlantic.
D is the start day of the operationlike you said, if comes from millitary notation in invasion plans. So for example if the plan calls for the taking of city x on the third day that would be written as:
D+3 take city x...

Also I thought husky was Scilly? Wasn't overlord d-day?