In all its wars, Germany excelled at maneuver warfare. However, it wasn't until the invention of the reliable, quick, and extremely powerful Panzer IV that the German Panzer Corps really waged a blitzkrieg. Upgrades to the armor and armament of the Panzer IV took the tank from an infantry support role and made it a powerful weapon for confronting nearly any enemy. In the end, simple numbers defeated superior design. The number of Shermans and T-34s produced was ten times that of Panzer IVs.