Characters that are part of a Detachment or Formation presented in this book must always issue and accept a challenge whenever possible. If you have several models in a combat with a special rule to this effect, you can choose which model issues or accepts the challenge.
Units containing one or more models with the Fearless special rule automatically pass Pinning, Fear, Regroup tests and Morale checks, but cannot Go to Ground and cannot choose to fail a Morale check due to the Our Weapons Are Useless rule. If a unit has Gone to Ground and then gains the Fearless special rule, all the effects of Go to Ground are immediately cancelled.
All Wolf Guard Battle Leaders, Wolf Guard Pack Leaders, Wolf Guard Terminator Leaders and Thunderwolf Cavalry Pack Leaders that are part of a Detachment or Formation presented in this book have the Preferred Enemy (characters) special rule when fighting in a challenge.
If deployed as a single unit, all of the models in this Formation lose the Independent Character special rule, though they remain characters. Furthermore, no Independent Characters can join this unit with the exception of Logan Grimnar (unless he is mounted on Stormrider) and Arjac Rockfist. However, the Formation's Fearless special rule is replaced with the Zealot special rule for as long as Logan Grimnar remains with the unit.
An army that includes this Formation can re-roll the dice when determining who deploys first, and adds 2 to the dice roll when attempting to Seize the Initiative.
This rule is often presented as Preferred Enemy (X) where X identifies a specific type of foe. If the special rule does not specify a type of foe, then everyone is a Preferred Enemy of the unit. A unit that contains at least one model with this special rule re-rolls failed To Hit and To Wound rolls of 1 if attacking its Preferred Enemy. This applies both to shooting and close combat attacks.
