Did you notice Peter Cushing doing the German accent?
In WW2 movies, there were at least four approaches to handling the German dialogue:
- Speak German with subtitles
- Speak English and ignore the issue (Valkyrie)
- Whole cast speaks English with an accent (das boot)
- Have only the “Germans” speak with a German accent, and in Hollywood these were almost always English actors.
- I think there were also Hollywood war movies where the Germans were played by English actors using English accents.
…and here’s Cushing making Nazi aqua-zombies