This movie was a German film with German actors, not sure who that Hitler was. I've seen the Anthony Hopinks film, and it was great. I only wish they had more of the famous scenes and yelling matches between him and Guderian.. (Panzer Leader is a great read on that topic).

The Heer is the regular Army, made mostly of a Prussian officer core steeped in military traditions. These guys in many cases were more gentlemanly than the Americans or Brits.