Rules (4) Leader 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. Deadly Demise This ability always takes the form **Deadly Demise X**. Each time a model in this unit is **destroyed**, after the units embarked within it (if any) have made their **emergency disembark moves**, roll one D6. On a 6, that model suffers a **deadly demise**; each unit within 6" of that model suffers a number of **mortal wounds** denoted by **X** (if this is a random number, roll separately for each unit within 6").
***Example:** An Impulsor with a unit of Intercessors embarked within it is **destroyed** by ranged attacks. First, any unresolved attacks made by the attacking unit are resolved. Then the Intercessors make an **emergency disembark move**. Then the roll is made for the **Deadly Demise** ability, and on a 6, that ability is resolved. Finally, the Impulsor is removed from the battlefield.* 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).