Hmm, Chase, does "until the game begins" mean, until turn 1 starts? Or does the game begin during deployment (which is after all a part of the game and happens while the game clock is on). If the halves are considered 1 army during deployment, it would follow that one team can put all of their units in reserve (as long as it's not more than half of the total units in the army). On the other hand, if the armies are still 2 different armies during deployment, that would mean that each half would have to deploy have of their units...