It was at the discretion of each commander where they would place their units behind the hill in the morning, prior to the battle.  The center, the north wing, the south wing, or at the rear in reserve - generally speaking.  As the battle took shape they may reorganize their units before sending them over the hill to engage the enemy.  What really needed to be decided now was Major Julian's idea of entrenchments.  Would the Allied commanders agree to entrenching their positions?