[hoplitis]

JaM
correct way of putting it but there is a catch. On map arty are targets (and under certain circumstances off map arty too)and on game terms they are units that can perform other tasks (they can take an objective hex etc).So they must be "managed" all way through the game. In the case of Mustang's 6 battalions I'd suggest that if he didn't buy ammo trucks or something equivalent and after using his one or two fire missions and enjoying the "big bang", to seriously consider moving them off map. It is not a retreat it's a permanent tactical redeployment LOL.
And by the way it would be nice if Mustang lets us know the outcome of the battle.