'Regardless of the armour it wears or the equipment it carries, there is a limit to how well protected a model can be, with larger models proving much harder to encase in armour than their smaller counterparts. To represent this, models whose troop type is:

• Infantry or cavalry can never have an armour value better than 2+.

• Chariot, monster or war machine can never have an armour value better than 3+.

Any bonuses, regardless of their source, that would improve a model's armour further have no effect.