However if you are interested in starting to learn why Adolf Hitler and the Germans committed suicide, you might start by reading Alice Miller.
Alice Miller is a German herself and writes in German but has good English translations.
And here is Alice Miller on Adolf Hitler, just click on - This Is A War - ABUSE
You can see her writing by clicking on YouTube - The roots of violence.
If you wish to understand Hitler and the Germans it is best to start with the book, "For Your Own Good", by Alice Miller
And interestingly, Islam has exactly the same reasons for committing suicide.