Rome vs Han essay- want get some opinions

[Dan Howard]

Ignoring the fact that most crossbows are unlikely to penetrate one medieval breastplate, let alone two, the assumption that the so-called armour-piercing capability of any weapon is enough to effect a battle assumes that the majority of a host is actually heavily armoured. This is rarely the case. I also find it extremely hard to believe that the metallurgical content of weapons and armour between opposing armies differed so greatly that they might affect the outcome of a battle.