(edit to fix a really stupid mistake) What I find bizarre is that this taught the French nothing for later at Agincourt, because the English defeated them exactly the same way, with less men, that time too. If this story seems familiar, it's because it is. Every time someone tells me I should have more respect for the French, I think of stuff like this. As far as I can tell, except the Normans, the French could only hold power by brutalizing those weaker than themselves and seemed to often fold fairly easily.
And some with them too. I recall being particularly struck at the end by the story of John, King of Bohemia, or "John the Blind" as he was known. From Froissart, check this out:
...for all that he was nigh blind, when he understood the order of the battle, he said to them about him: 'Where is the lord Charles my son?' His men said: 'Sir, we cannot tell; we think he be fighting.' Then he said: 'Sirs, ye are my men, my companions and friends in this journey: I require you bring me so far forward, that I may strike one stroke with my sword.' They said they would do his commandment, and to the intent that they should not lose him in the press, they tied all their reins of their bridles each to other and set the king before to accomplish his desire, and so they went on their enemies. The lord Charles of Bohemia his son, who wrote himself king of Almaine and bare the arms, he came in good order to the battle; but when he saw that the matter went awry on their party, he departed, I cannot tell you which way. The king his father was so far forward that he strake a stroke with his sword, yea and more than four, and fought valiantly and so did his company; and they adventured themselves so forward, that they were there all slain, and the next day they were found in the place about the king, and all their horses tied each to other.
It's also said the Black Prince, who was one of the victors, adopted his crest as his own. Whether in honor or insult, I'm not sure.
I love history, because it proves that people are gloriously stupid, more often than not. I have no idea how the human race survives.