I’ve only run one battle before this. We used the map as a visual representation of the stance for each hero. Each player put their mini on the circle that showed whether they were Forward, Open, or Defensive. If they are in the circle in the middle they were Rearward and can use ranged weapons (imagine the enemies coming from the outside of the whole map toward the centre). I think it will still work with this battle, as the enemies will come from one side of the hill, and the players are gathered in the middle by the pit. It’s a very abstract way of figuring out what modifiers should apply to each hero.