These rapid advances on the Eastern Front destroyed Destroying additional veteran German combat units and severely limited Limiting German Führer Adolf Hitler 's ability to reinforce his Rhine defenses .

The order Arranging for the invasion Attack was put Placing forward in `` Führer Directive No .

On 20 July 1944 , Claus von Stauffenberg and other conspirators attempted to assassinate Killing Adolf Hitler , Führer of Nazi Germany , inside his Wolf 's Lair field headquarters near Rastenburg , East Prussia .

Führer Adolf Hitler placed Placing German Field Marshal Erwin Rommel in charge of developing Cause_to_make_progress fortifications all along Hitler 's proclaimed Atlantic Wall in anticipation of an invasion .