Support Before the battle, in the Muster Armies step, for each **leader** and **support** unit in your army, you can select one friendly **bodyguard** unit that unit can lead. That unit will then lead that **bodyguard** unit for the battle and form an **attached** unit with it.
Unless otherwise stated, each **bodyguard** unit can only have one **leader** unit and one **support** unit attached to it.
Doctrina Imperatives At the start of the battle round, you can select one of the Doctrina Imperatives below. Until the end of the battle round, that Doctrina Imperative is active for your army, and all units from your army that have the Doctrina Imperatives ability gain the relevant abilities shown below.
PROTECTOR IMPERATIVE
■ Ranged weapons equipped by models in this unit have the [HEAVY] ability.
■ Improve the Ballistic Skill characteristic of ranged weapons equipped by models in this unit by 1.
■ Each time a melee attack targets this unit, if this unit has the ^^**Battleline**^^ keyword and/or it is within 6" of one or more friendly **^^Adeptus Mechanicus Battleline**^^ units, subtract 1 from the Hit roll.
CONQUEROR IMPERATIVE
■ Ranged weapons equipped by models in this unit have the [ASSAULT] ability.
■ Improve the Weapon Skill characteristic of melee weapons equipped by models in this unit by 1.
■ Each time a model in this unit makes an attack, if this unit has the **^^Battleline**^^ keyword and/or it is within 6" of one or more friendly **^^Adeptus Mechanicus Battleline**^^ units, improve the Armour Penetration characteristic of that attack by 1.
Stealth If every model in a unit has this ability, each time a ranged attack targets that unit, that unit has the **benefit of cover** against that attack (13.08).
Feel No Pain This ability always takes the form **Feel No Pain X+**. Each time a model with this ability would lose a wound, roll one D6: on an **X+**, that wound is not lost.