What was adolf hitler known for?

Adolf Hitler was known for slaughtering millions of Jewish people, gay people, disabled, handicapped, Jehovah's witnesses, etc. He was also known as the leader of Nazi Germany. As well as starting world war 2. During the war he did insane things such as mass genocides when they were losing. He also allied with Italy and Japan who both performed terrible actions just like his, during the war. All in all Adolf Hitler was a extremely terrible, crazy and uncontrollable person.