Guan Bu

Guan Bu must be accompanied by a unit of Imperial Guard, and he may not leave this unit. As long as he remains in it, he and his unit may re-roll failed Break Tests, and always test of 3D6, discarding the highest result.

If the majority of the models in a unit are Stubborn, the unit is always Steadfast, whether or not they have a higher Unit Strength than their enemy or are disrupted.