The game's movement rules only allow the brigades to be moved to a friendly town that is no more than 1 town away from another brigade or the HQ in its own Division. The rule though does not apply in the case that the brigade is the only one left in its division and if this occurs it is free to move to any surrounding town. This occurs through the routing of brigades. Routing removes brigades from the game map for 6 hours and can happen in a few ways. Brigades in a division will normally "fallback" if the AB is captured, but only if the game's movement rules allow it, that is, move to within 1 link of a brigade or HQ in its own division. If none of the surrounding friendly towns are within 1 link of a brigade within its own division when the AB is captured, then the brigade will be routed off the game map for 6 hours.