After watching numerous TV shows about the invasion , it's obvious that the defenses were inadequate . The Germans had several years to build coastal defenses and the Allies went through them in about a day . What could Rommel have done different or better ? Yeah , we all know that SOMEBODY could have woke Hitler up and had the Panzer reserves brought up but that's more of a strategy blunder . I'm talking about fixed defenses . Could ANYTHING have changed the outcome ?