Karl Eckhardt was a high ranking Nazi general who was in charge of Military Administration of France. He plays a small role in the game, seen briefly when he and his ruthless alpha-female bodyguard Franziska escape from his residence when Sean Devlin invades in order to steal back the Aurora. Sean can hear him and Franziska engage in conversation through ventilation system in Doppelsieg autos, discussing their attack of Paris. By the end of the game, he and Franziska survive Kurt Dierker and continue to lead the Nazi occupation despite the resistance strength.
The real military commanders of occupied France were Otto von Stülpnagel, Carl-Heinrich von Stülpnagel and Karl Kitzinger.