Was German expansionism which led to World War II simply an extension of the war aims of 1914-18‪?‬

Were it only the exceptional ideas and plans of Adolf Hitler and his NSDAP that led to World War II or did the Führer only succeed in the old aims of German foreign - and in the end - war policy of the former empire? If yes, it would not be only Hitler’s war, but a German war which could not be reduced any longer to the Nazi-ideology, but to a constant German policy, independent of the political system until the end of World War II.
It has to be explained, which aims Germany followed in World War I and World War II, why it followed them, who supported these aims in Germany and why, and of which kind their aims’s ideological background was.