Although most of his career was in the USA, he wasn't born an American. I can't say if he ever became a US citizen.
This should be enough to exclude Fernandel, wouldn't it?
Let's sum this up:
- An actor, but not only an actor;
- He worked in both the silent era and the 'talkies'
- His nationality and accent got him roles in WWII films
- He died before they shot "The longest day"
- When puzzlers suggested german speaking actors, I never said they should look the other way.
And a clue: the car he is closely related to is a movie car.