Artemis, you might also consider Daryl F. Zanuck's classic The Longest Day.
It is pretty historically accurate; and the Germans speak real German with English subtitles.
Sean Connery actually has a bit role, but he *isn't* subtitled.
Cheers!
That’s my biggest beef with war movies, when the Germans speak with British accents. That’s what makes The Longest Day great, the Germans speak in German, the French speak in French, etc.