During the Action phase of the next campaign round, when players are determining which mission is used, the player with this card can choose to change their pre-battle choice from Hold to Reinforce, or vice-versa, after the players have a card that allows them to change their pre-battle choice, they roll off, and the winner chooses the order in which they each get the opportunity to do so.

This does not apply to battles in which a player is assaulting a special location using the ‚Assault Stronghold‘ card.