Gahlan Surlak

A unit that includes any models with this special rule may not be joined by any model that does not also have this special rule (this includes Legion Techmarines and Legion Apothecaries, which may not be assigned to a unit with this special rule unless they also have this special rule).

Any models with the Infantry or Cavalry Unit Type in the same unit as a model with this special rule may re-roll any failed It Will Not Die rolls made. This effect immediately ends if the model with the Sacred Trust special rule is removed as a casualty or otherwise leaves the unit.

Violence Incarnate: On any turn in which a unit with this special rule makes a successful Charge it gains +1 Attack for the remainder of that turn in addition to any other bonuses, even if that Charge is considered a Disordered Charge.