I've heard this before.
Hitler was the worst thing to happen to Germany. His soldiers fought hard for their country under extreme circumstances and this is what he thought of them. His arrogance and madness ruined what was a fine country though many of its own people share responsibility in believing in this lunatic.
When it became apparent that Germany would not win, Hitler ordered the destruction of everything (powerplants, livestock, factories, hospitals, etc) that could sustain the German people after the war ended. He "reasoned" that if the Germans could not attain victory for him, then they had no reason to go on living.
Luckily for the Germans, by that time Hitler was little more than a delusional manic, raving in his Berlin bunker. Albert Speer made sure that these mad directives were never carried out.