Why did Romel, Guderian and many great German generals fight the war for Hitler?

Question:

Why did Romel, Guderian and many great German generals fight the war for Hitler?

I mean don't they know that it was an act of aggression?

Best Answer - Chosen by Asker: The German General Staff was an organization above the Hitlerites, going back to the days of Bismark and earlier. The Prussians were men of honor, obedience, and military discipline. Whoever was in charge was the leader, the bossman, the top banana, the one who they swore allegiance to. Towards the end of the war, the generals finally figured out that their conscience was also to be considered, at least some of them, but it was a battle they had to fight within themself.......conscience or obediance to command.