Paul von Hindenburg
Hindenburg played key role in the Nazi Machtergreifung (Seizure of Power) in 1933. He was not involved in the planning, but did not stop Hitler. In the "Government of National Concentration" headed by Hitler, the Nazis were in the minority. Most of the ministers were from the von Papen and von Schleicher governments. Besides Hitler, the only other Nazi ministers were Hermann Göring and Wilhelm Frick.