Adolf Hitler and Napoleon Bonaparte both have several lapses in judgment on the battlefield, and in the planning rooms, during their reigns. While these lapses in judgment immediately may not result in the defeat of an army, when they are added together the results can and often were disastrous. Though Hitler had a strong army that could fight well, the mismanagement of that army and the people around it eventually lead to his personal demise as well as his army's demise. Napoleon too is responsible for making several irresponsible and debilitating decisions during his reign.
The Rhineland, a buffer zone between France and Germany that was formed at the end of World War I in the treaty of Versailles, is a very sensitive area that cannot be occupied by any German military forces.