Any unit that is not already engaged in combat may Flee as a charge reaction. Units already fleeing must Flee when charged.
When a unit chooses to Flee from a charge, it flees directly away from the charging unit:
Pivot the unit about its centre so that it is facing directly away from the centre of the charging enemy unit.
After pivoting, the unit makes an immediate flee move.
Should a fleeing unit not run far enough, it may be run down and destroyed by the charging unit.