Great article and topic. But just FYI, I don't think building a Maginot Line actually qualifies as "fighting the last war". As the author explains, the ML actually worked -- the Germans had to invade through Belgium! And had they built the ML all the way to the sea, the blitzkrieg would have failed. Perhaps a better historical military analogy would be that of Billy Mitchell and the rise of Naval Aviation (http://en.wikipedia.org/wiki/Naval_aviation#Interwar_period). Anyway great lessons here -- thanks for posting.