I used to have a part (a small part, I was just a private!) in Brigade and Divisional level war games (was attached to a Brigade HQ for a while). Let me tell you - from what I saw, those things are damn near scripted. It's more an exercise to make sure all commanders are playing by the rulebook, than it is to test out and try new tactics, or to really try to beat the Bluefor.
I like what that 'maverick' Marine general did - this is the first I've heard of it. Our Armed Forces need to think like that guy does
Anyone have any links to more info about this? I'd love to read about it.