[Erax]

Puke :

Fiddling around with the system to find a new way to win is all well and good, as long as your opponent has fair warning (he doesn't have to know what you are going to do, just that you will be trying new, different and possibly game-breaking tactics).

And while I agree that wargames are a training for war, I think you're still standing too close to the forest. The purpose of games is the same as that of fiction : to allow you to make the choices you would have to make in a dangerous situation, without placing yourself in actual danger.