Jonathan Jeckell

“Like their modern counterparts, and unlike traditional warriors, Byzantine soldiers were normally trained to fight in different ways, according to specific tactics adapted to the terrain and the enemy at hand. In that simple disposition lay one of the secrets of Byzantine survival. While standards of proficiency obviously varied greatly, Byzantine soldiers went into battle with learned combat skills, which could be adapted by further training for particular circumstances. That made Byzantine soldiers, units, and armies much more versatile than their enemy counterparts, who only had the traditional fighting skills of their nation or tribe, learned from elders by imitation and difficult to change. In”
― Edward N. Luttwak, The Grand Strategy of the Byzantine Empire