Ok, late to this party, but I watched this movie yesterday. Of course he's a Nazi!
He has a Hydra patch on his arm instead of a swastika, but there's no way to deny it.
Hydra was the advanced Research division of Hitler's forces. He has Nazi leaders come in to evaluate his progress. He has since defected and started what he plans to turn into his own regime, which could be perceived as a creative liberty taken with the character, I suppose. But he's always been after his world domination with himself seated on top, not just in Hitler's name.