What did Hitler do for Germany?

Even though it was for all the wrong reasons, Hitler was a very good leader. He had an uncanny ability to Unite the people in a way never before seen in the history of Germany. He managed to bring Germany out of depression and brought new technologies and military advancements to Germany's army. Hitler had studied ancient technologies and enlisted scientists to study and developed new technologies from these advancement. Many of military developments made by Nazi Germany are still in use today as some of the most capable machines in history.