Why does all cavalry get the "Effective against armour" trait?

[Arman]

When the Byzantines were so impressed by the charge of Frankish knights had they simply forgetten how their Greek and Roman predecessors fought?

Absolutelly, recruiting merc for everything cav, inf, marines. But this mention could be simply braggin of Frankish source as well.

I read the "Evolution of Art of War" book writing by Russian professor of military accademy Svetchin(1920s), very well known for his tactical and strategical doctrines and idias.
He calls Heiteroi - cuirassiers of Ancient Times, He beleives that only one cavalry of ancient time could be regarded as good as Heitroi, is Carthage heavy cavalry. He say the tactics and drill, discipline, knee to knee charge, maneuring skills of this two cavalry were supperior to all later cavalry inlcuding knights who were charging not uniformly not synchronously and more like a "mob of bigs" as Sweden king Adolf Hustav said. He beleives that after fall of Rome the art of war suffered big set back in Europe mostly due to lack of strong ecconomics that Rome and Greece had, most of the states fell back to natural exchange and this make proffesional paid army living in barracks imposible to maintain for kings that didn't controled their state resources anymore, spreading them over feudals, who at their turn were not interested in providing kings with best quality armies and excatly oposite were trying to avoid giving monarchs full power.
Only in Napoleonic time when monarchy gave kings greater resources proper taxation systems and trade were developed, creating such units like Cuirassiers and Line infantry become posible again.


Lances of Turkic, Sarmatian, Sakae, Parthian cavalry were chained into the saddle and handled by too hand, they could deliver even stronger blow that feudal knight lance, because they bound to the horse and were passing energy of horse innertion on the point of the lance, as well I were more heavier. I remember readins somewhere they heiteroi lance had metalic plate fixed through whole length of lance to make it harder to break.