In an undead army, it is possible to heal a unit by recovering lost Wounds, and to resurrect fallen warriors. Wounds recovered in this way follow a strict order:
First, any characters that have joined the unit are healed. A character that has been reduced to zero Wounds and removed from play cannot be resurrected.
Second, models with more than one Wound on their profile are healed.
Next, the unit champion is resurrected, displacing rank-and-file models as required, followed by the standard bearer and musician.
Finally, rank-and-file models are resurrected.
Note that, in the case of multiple Wound models, each model must be fully healed, recovering all of its lost Wounds, before another can be healed or resurrected.
Note also that at least one model must remain in order for a unit to be healed. In other words, a unit that has been reduced to zero Wounds and removed from play cannot be resurrected.
Resurrected models are added to the front rank until it reaches the minimum required to claim a Rank Bonus, after which additional models can be added to the front or rear rank. If the unit already has more than one rank, models can only be added to the rear rank. A unit cannot be taken beyond its starting size.