Actually Dukat, although not fully jewish, there were several Mischlinge (half-jewish) officers in the German military, who were declared by Hitler to be of "German Blood" and so ok to serve (mostly because they were badly needed officers). This includes two field marshals and fifteen generals. Most famously, Erhard Milch, a Luftwaffe Field Marshall, had a Jewish father:
From left to right, Erhard Milch, Wilhelm Keitel, Walther von Brauchitsch, and Erich Raeder.