Subjective: The following part of this article is based upon the editor's personal experiences and opinions, and therefore may not be applicable for all readers.
During the battle, Gilbert and Annette will be held "hostage" in the far righthand corner of the battlefield. The four units guarding their escape will not attack unless one of them is attacked or if your units get too close to Baron Dominic. If either Gilbert or Annette are defeated in battle, you will lose the match. The best strategy is to have enough units rendezvous with Gilbert and Annette before attacking the units or Baron Dominic. After the four units are defeated and Gilbert and Annette in safe positions, you can set your focus on defeating Baron Dominic in order to win the battle.