Cataphracts were the most heavily armored form of cavalry in the ancient world, with riders and mounts both clad in heavy armor. Originating among the wealthiest nobles of various central Asian steppe tribes, such as the Massegatae and Scythians, they were adopted and adapted by several major empires. The Achaemenid Persians, Seleucids, Sassanians and eventually the Romans and their Byzantine successors. Usually armed with long lances, they harnessed the mobility and mass of the horse to the durability and solid fighting power of the spear-armed phalanx. Although very expensive to equip and...