Armies often include a Battle Standard Bearer – a trusted warrior who holds aloft the General's personal heraldry. A Battle Standard Bearer is a rallying point for the army, from which friendly soldiers can take heart and draw strength.
If a Battle Standard Bearer is in a unit that Refuses a Challenge and is subsequently moved to the rear of its unit, it loses the Hold Your Ground! special rule until the end of the turn. Note, however, that if the Battle Standard Bearer has a magic standard its effects continue to apply as normal (it cannot be 'switched on or off').