The Red Baron (2008)
The Red Baron is a German-produced biopic about Manfred von Richthofen filmed in English with German actors. That sentence describes most of what is right.
Actor: Til Schweiger
Til Schweiger appeared in The Red Baron and Inglourious Basterds, in the latter playing a German soldier who defected to kill Nazis. He is among the most commercially successful figures in German cinema as a director and producer, and has been a persistently controversial public figure there.