Who was the German Field Marshall during world war 2?

Answer 1

Field Marshall (Generalfeldmarschall in German) was the highest rank a German officer on the battlefield could achieve in the Wehrmacht (Defense force in German, which consited of their army, navy, airforce, and Waffen SS). There was several of them, usually in command of an army group. I'll list them to the best of my knowledge:

Erwin Rommel, Friedrich Paulus (the only field marshall in Germany's history to surrender), Erwin von Witzleben, Werner von Bloemberg, Walter Model, Erich von Manstein, Paul Ludwig Ewald von Kleist, Fedor von Bock, Wilhelm Ritter von Leeb, Gerd von Rundstedt, Wilhelm Keitel, Ernst Busch, Günther von Kluge, Wilhelm List, Walther von Brauchitsch, Walther von Reichenau, Eduard von Böhm-Ermolli, Maximilian von Weichs, Erwin von Witzleben, and finally Ferdinand Schörner.

I'm pretty sure I covered all of them, please make corrections if any of these are wrong.

Karl Doenitz and Erich Raeder were the equivalent of the field Marshall. Also I do not believe that the German Navy had a "field Marshall" as you stated but a grand admiral which is the equivalent of the former.

Answer 2

There were quite a few, 26 to be exact. They were:

• von Blomberg
• Göring
• von Bock
• von Brauchitsch
• Kesselring
• Keitel
• von Kluge
• von Leeb
• List
• Milch
• von Reichenau
• von Rundstedt
• Sperrle
• von Witzleben
• von Böhm-Ermolli
• Rommel
• von Küchler
• von Manstein
• Paulus
• Busch
• von Kleist
• von Weichs
• von Richthofen
• Model
• Schörner
• von Greim

Hope that helped.