 In the German version there are two changes made to the original score:  first, with the Germans marching into Warsaw we hear the fanfares of the  Deutsche Wochenschau (i.e. the German News Reel) instead of "normal" music.  Then, during the opera scene we hear the Nazis singing all three verses of  "Deutschland, Deutschland über alles" in the background. However, in the  Third Reich it was common (and was thus later inserted into the German sound  track) only to play the verse one, directly leading into the "Horst Wessel  Lied", which was something like the official party anthem.