Coincidentally, the most famous two tragedies brewed by GEASS had their protagonists on this battlefield.
One is the "Son of Light," Cu Chulainn.
His GEASS included these three tenets:
First, due to his name, he must never consume dog meat or approach a bonfire for life;
Second, he cannot refuse food offered by those of lower status than himself;
Third, he cannot refuse the requests of a bard.
Upon learning these secrets, Queen Maeve, who had an old grudge against him, disguised herself as an old woman roasting dog meat by the roadside while he was on his way to his final battle, inviting him to eat dog meat, putting him in a dilemma, forcing him to violate his GEASS and thus losing his protective power.
