→Description: Medusa Whip tag repair
When disputes arise between individual warriors that neither they nor their immediate superiors can resolve, both warriors must petition to have their differences heard by the [[Clan Council]] (or the [[Grand Council]] if the opponents are [[Bloodname]]d or hold important rank). Until the council rules, the disputants are bound by Clan law to avoid any unnecessary contact. This may be carried to the point of one transferring to another unit. If one takes aggressive action against the other before the council rules, or if he disagrees with the council's decision, he or she has committed a breach of Clan law punishable by expulsion into a lesser caste or out of Clan society entirely.
If the issue is not resolved by the council, the parties may then call for a Trial of Grievance. The rules governing the trial are many and strict. If the combatants are MechWarriors or fighter pilots of different weight-class vehicles, the council must make the contest more even. Often, a vehicle type that is mid-way in size is chosen, and the disputants have several weeks to become accustomed to their new vehicles. If the disputants are from different branches of the warrior caste, then some kind of a middle ground, such as fencing or the use of [[Medusa
whip]]s, is chosen. If the combatants are completely different in physical form (such as an [[Elemental]] versus a Pilot) then they can either completely forget the Trial of Grievance or use an alternate form of "combat" such as a darts competition.<ref name=ergc17>''Era Digest: Golden Century'', p. 17</ref>
The trial itself is judged by members of the council, who ensure that trial and combat etiquette is strictly heeded. A [[Circle of Equals]] is defined, anything from ten meters in diameter for a hand-to-hand trial to more than 100 kilometers wide for an air duel. No one but the combatants may enter the Circle of Equals unless invited, and leaving the Circle before the contest is ended is a shameful defeat. All trials are defined as to the death, but they usually end before either combatant is killed; the definition is supposed to dissuade Trials of Grievance being declared unnecessarily. In addition should a Trial of Grievance occur too frequently, possibly affecting a military unit's readiness, a [[Star Colonel]] or [[Khan]] may forbid any Trials of Grievance for a certain amount of time.<ref name=ergc17/>