That depends on your definition of “socialist” (I define socialism as the last stage leftward before you reach communism) [1]. Most people I know define “socialism” as a leftist, collectivist, equalizing ideology, like that which exists in Norway or France, where the government takes care of (and controls) everyone equally from cradle to grave. That really doesn’t describe Hitler’s Germany (although some elements of Nazism could be described as socialist).
[1] however, true communism supposedly doesn’t occur until the state “withers away,” but no state ever withers away, so communism is just Jewish bullshit anyway