If the majority of the models in a unit have the Immune to Psychology rule, the unit automatically passes all Panic, Fear and Terror tests it has to take. It should be noted that they have to take Break tests (and other Leadership tests) normally – being stoic does not necessarily make a warrior entirely heedless of mortal danger.

If the majority of the models in a unit have the Immune to Psychology rule, the unit cannot choose Flee! as a charge reaction. Pride, or a sluggish acceptance of the situation, prevents them from doing so.