If a unit with this special rule is within 6" of a friendly model that has the Knight's Vow, the Questing Vow or the Grail Vow, and if that model is not fleeing, this unit can use that model's Leadership characteristic instead of its own. In addition, a standard carried by a unit with this special rule cannot be counted as a trophy of war. A character with this special rule can only join a unit that also has this special rule.