Really, you can go back to JC Fuller as well and say that the British invented it, or you can ask "what is Blitzkrieg, really?" And you'll see that it is not at all that clear-cut, that the Germans themselves did not have a formalized Blitzkrieg doctrine, and that there actually were considerable differences between the Soviet Deep Battle, and what in practice became the German Blitzkrieg, and so on.

Peak oil is not an energy crisis. It is a liquid fuel crisis.