Does anyone have or know of a pre-modern assessment or analysis of the warrior class of old, such as Knights, Samurais, Templars, Spartans, Teutonics, etc. And specifically non-meme or fantasy shit, but something grounded in reality, I had a site which had the sigil of a lion with a weird name depicting all these classes, but I had forgotten it, and the author did seem to know what he was talking about.