front rank, at least, might be expected to have metal armour, perhaps even a klivanion. The role of such infantrymen, drawn up in serried ranks, was largely defensive. They constituted a bulwark which could resist enemy heavy cavalry charges, and formed a movable battlefield base from which the cavalry and other more mobile troops could mount attacks, and behind which they could rally. Peltasts The type of infantryman called a peltast (peltastēs) is far more heavily referenced in contemporary sources than the “spearman”. Although the peltasts of Antiquity were light skirmish infantry armed with javelins, it would be unsafe to assume that the troops given this name in the Komnenian period were identical in function; indeed, Byzantine peltasts were sometimes described as “assault troops”. Komnenian peltasts appear to have been relatively lightly equipped soldiers capable of great battlefield mobility, who could skirmish but who were equally capable of close combat. Their arms may have included a shorter version of the kontarion spear than that employed by the heavy infantry. At Dyrrachion, for example, a large force of peltasts achieved the feat of driving off Norman cavalry. Peltasts were sometimes employed in a mutually supportive association with heavy cavalry. Light infantry The true skirmish infantry, usually entirely unarmoured, of the Byzantine army were the psiloi. This term included foot archers, javelineers and slingers, though archers were sometimes differentiated from the others in descriptions. The psiloi were clearly regarded as being quite separate from the peltasts. Such troops usually carried a small buckler for protection and would have had an auxiliary weapon, a sword or light axe, for use in a close combat situation. These missile troops could be deployed in open battle behind the protective ranks of the heavy infantry, or thrown forward to skirmish. The light troops were especially effective when deployed in ambush, as at the Battle of Hyelion and Leimocheir in 1177. Cavalry The earlier Byzantine heavy cavalryman, who combined the use of a bow with a lance for close combat, seems to have disappeared before the Komnenian age. The typical heavy cavalryman of the Komnenian army was a dedicated lancer, though armoured horse-archers continued to be employed. Heavy cavalry The heavy cavalry were the social and military elite of the whole army and were considered to be the pre-eminent battle winners. The charge of the lancers, and the subsequent melee, was often the decisive event in battle.