The Battle of the 30 by Octave Penguilly L’Haridon, 1857, depicts a scene from 1351 over the War from the Breton Succession when two teams of knights took to the sphere in an organised melee; by means of historynet.com In addition to the heraldic colours, heraldic ordinaries are well known https://medievalflag42974.blogoxo.com/32079220/what-does-medieval-banners-and-flags-mean