First, Hitler was not a dictator as he was voted into power. Second, Hitler was a corporal in WWI therfefore did not lead much at all least of all Germany into WWI.
Hitler was elected by popular vote, so it is hard to say he was a pure (by definition) Dictator. Also, England and France declared war on Germany, so Hitler did not LEAD Germany into WWII, but was rather the leader at the time Germany went to war and entered into WWII.