Some magic spells and items can restore lost Wounds and even resurrect fallen warriors in an Undead (including Tomb Kings) unit. Wounds regained in this way follow a strict order.
First, the musician is resurrected, and then the standard bearer, displacing rank-and-file models as required. Then rank-and-file models with multiple Wounds (including command figures) are healed to their starting value. Resurrected command models displace rank and file models as required. Finally, any remaining Wounds resurrect rank-and-file models. In the case of multiple-Wound rank-and-file models, the first resurrected models must be fully healed before another can be resurrected.
Resurrected models are added to the front rank until it reaches at least a full rank – additional models can then be added to the front or rear rank. Raised models may never displace enemy units; if there is not enough room, any excess models are wasted. Similarly, if you do not have enough models of the appropriate type, place as many as you can – the rest are wasted.
A unit cannot be taken beyond its starting size unless specified, and no single model can ever exceed its starting Wounds value. Any characters in the unit can only be healed if targeted separately from the rest of the unit, in which case only they are healed.