The Byzantine army evolved from that of the late Roman Empire. The language of the army was still Latin (though later and especially after the 6th century Greek dominates, as Greek became the official language of the entire empire) but it became considerably more sophisticated in terms of strategy, tactics and organization. Unlike the Roman legions, its strength was in its armoured cavalry Cataphracts, which evolved from the Clibanarii of the late empire. Infantry were still used but mainly in support roles and as a base of maneuver for the cavalry. Most of the foot-soldiers of the empire were the armoured infantry Skutatoi and later on, Kontarioi (plural of the singular Kontarios), with the remainder being the light infantry and archers of the Psiloi. The Byzantines valued intelligence an