Units on the winning side are each only permitted to pursue a single enemy unit that they are in base contact with (declare this before any Flee rolls are made). In addition, they cannot choose to pursue if one or more of the units they are in base contact with pass their Break tests. This is quite realistic – your warriors are hardly likely to go haring off after a broken enemy if there are still fresh and eager foes to face. If there is more than one pursuing unit, the controlling player can choose the order in which they move.