Hegels philosophy was a heavy influence on a lot of different groups. Marx, Engels and Feuerbach used a lot of his work, especially his thoughts on history, who where also shared by the Fascist movement. Isaiah Berlin called him one of the architects of modern Authoritarianism, and in fact, I can't think of a single authoritarian or totalitarian state since the 19th century, that wasn't in some way inspired by Hegel.
Of course, how big that influence finally was, is up to debate, and there are a lot of angry german philosophy minors who will tell you, that he was just some kind of spiritual grandpa to Marx. But the high ranking mirrors my personal interpretation of him and especially german history and I'm quit comfortable with it.