All of this was very minor compared to the mistakes that the Nazis made with their ludicrous plan that destroyed the German Army. Hitler did what Eisenhower, Bradley, and Montgomery had been trying to do: shorten the war by six months.
Apparently, Bradley underestimated the Germans and was caught off guard. It was his blunder. Also, Patton’s intelligence officer suspected that something was up but was never taken seriously.
Also, for whatever reason the British stayed out of the battle. They could have offered support but they didn’t. The American army was on its own.