Husbandry for infantry.

I think there should be a barracks tech in the castle age that improves infantry hp. Man at arms is strong enough in the feudal age in my opinion, but longswords, two handed and champs could really use it. You could call it veterancy, or martial arts, or something, and have it give 15 or 20 hp. The spears don't really need it, but it would be a go to tech in the late game. Also, civs like mayans and goths shouldn't get it. Their infantry bonuses are good enough. This tech is to help out other civs infantry be competitive.