Quote Originally Posted by Ludens View Post
I am probably confusing battles. Either way, downed knights would often be finished by supporting troops using long, thin daggers that could be slid into weak spots of their armour.
No you aren't. It was at Agincourt where the longbowmen slaughtered the french knights that were prisoners. Henry ordered this deed to be done by his longbowmen in order to bypass the code of honour, that ordered knights not to kill other knights that have been captured or are unable to defend themselves. Thus, Henry used his longbowmen who were non noble, plain villains, to massacre several thousands knights.