To be honest, Firaxis and 2K will probably never add this into the game on their own, and so comes Hitler as an alternate leader for Germany. The innovator of the Lightning War strategy, Hitler's leader trait is Blitzkrieg, which boosts military production and movement of combat units during wartime with major civilizations. Hitler will try to spread Germany's influence with voracious tenacity and has no respect for any nation with a small army.
Credits: JFD