The Combat of the Thirty takes place on March 26, 1351, where thirty Breton knights led by Robert Bemborough fight thirty English knights in Brittany. to determine who would rule the Duchy of Brittany.
It was an arranged fight between selected combatants from both sides of the conflict, fought among 30 champions, knights, and squires on each side. After a hard-fought battle, the Franco-Breton Blois faction emerged victorious. The combat was later celebrated as a noble display of the ideals of chivalry.