These provided the first way to get trucks and tanks across in quantity. The temporary harbors were destroyed in a storm, but by then enough soldiers and gear w

These provided the first way to get trucks and tanks across in quantity. The temporary harbors were destroyed in a storm, but by then enough soldiers and gear were in France to capture a real harbor at Cherbourg. Not quite right - only one was destroyed. The other was damaged, but used for the better part of a year and brought in millions of tons of supplies. A good part of the Aromanche harbour is still there. See https://en.wikipedia.org/wiki/Mulberry_harbour https://en.wikipedia.org/wiki/Mulberry_harbour It's not an understatement to say the logistics aspects of D Day were masterful, as was the disinformation campaign (Operation Bodyguard).