Some cataphracts fielded by the later Roman Empire were also equipped with heavy, lead-weight darts called Martiobarbuli, akin to the plumbata used by late Roman infantry. These were to be hurled at the enemy lines during or just before a charge, to disorder the defensive formation immediately before the impact of the lances. With or without darts, a cataphract charge would usually be supported by some kind of missile troops (mounted or unmounted) placed on either flank of the enemy formation. Some armies formalised this tactic by deploying separate types of cataphract, the conventional, very heavily armored, bowless lancer for the primary charge and a dual purpose, lance-and-bow cataphract for supporting units.
Interestingly, references to Byzantine cataphracts seemed to have disappeared in the late 6th century, as the famed manual of war, the Strategikon of Maurice, published during the same period, made no mention of cataphracts or their tactical employment.[citation needed] This absence persisted through most of the Thematic period, until the cataphracts reappeared in Emperor Leo VI's Sylloge Taktikon, probably reflecting a revival that paralleled the transformation of the Byzantine army from a largely defensive force into a largely offensive force. The cataphracts deployed by the Byzantine Empire (most noticeably after the 7th century, when Late Latin ceased to be the official language of the empire) were exclusively referred to as Kataphraktoi, due to the Byzantine Empire's strong Greek influence, as opposed to the Romanized term Cataphractos, which subsequently fell out of use.
These later Byzantine cataphracts were a much feared force in their heyday. The army of Emperor Nicephorus II, relying on its cataphracts as its nucleus, coupled cataphract archers with cataphract lancers to create a self-perpetuating "hammer blow" tactic where the cataphract lancers would charge the enemy, disengage, and charge again and again until the enemy broke and routed, all the while supported by cataphract archers, who continually pelted the enemy with missile barrages.
Contemporary depictions, however, imply that Byzantine cataphracts were not as completely armored as the earlier Roman and Sassanid incarnation. The horse armor was noticeably lighter than earlier examples, being made of leather scales or quilted cloth rather than metal at all. Byzantine cataphracts of the 10th century were drawn from the ranks of the middle-class landowners through the theme system, providing the Byzantine Empire with a motivated and professional force that could support its own wartime expenditures. The previously mentioned term Clibanarii (possibly representing a distinct class of cavalry from the cataphract) was brought to the fore in the 10th and 11th centuries of the Byzantine Empire, known in Byzantine Greek as Klibanophoros, which appeared to be a throwback to the super-heavy cavalry of earlier antiquity. These cataphracts specialised in forming a wedge formation and penetrating enemy formations to create gaps, enabling lighter troops to make a breakthrough. Alternatively, they were used to target the head of the enemy force, typically a foreign emperor.
As with the original cataphracts, the Leonian/Nikephorian units seemed to have fallen out of favour and use with their handlers, making their last, recorded appearance in battle in 970 and the last record of their existence in 1001, referred to as being posted to garrison duty. If they had indeed disappeared, then it is possible that they were revived once again during the Komnenian restoration, a period of thorough financial, territorial and military reform that changed the Byzantine army of previous ages, which is referred to separately as the Komnenian army after the 12th century.[28] Emperor Alexios I Komnenos (1081–1118) established a new military force from the ground up, which was directly responsible for transforming the aging Byzantine Empire from one of the weakest periods in its existence into a major economic and military power, akin to its existence during the golden age of Justinian I. However, even in this case, it seems that the cataphract was eventually superseded by other types of heavy cavalry.
It is difficult to determine when exactly the cataphract saw his final day. After all, cataphracts and knights fulfilled a roughly similar role on the medieval battlefield, and the armored knight survived well into the early modern era of Europe. The Byzantine army maintained units of heavily armored cavalrymen up until its final years, mostly in the form of Western European Latinikon mercenaries, while neighbouring Bulgars, Serbs, Avars, Russian states, Alans, Lithuanians, Khazars and other Eastern European and Eurasian peoples emulated Byzantine military equipment.
As Western European metalwork became increasingly sophisticated, the traditional image of the cataphract's awe-inspiring might and presence quickly evaporated. From the 15th century and onwards, chain mail, lamellar armor, and scale armor seemed to fall out of favour with Eastern noble cavalrymen as elaborate and robust plate cuirasses arrived from the West; this, in combination with the advent of early firearms, cannon and gunpowder, rendered the relatively thin and flexible armor of cataphracts obsolete. Despite these advances, the Byzantine army, often unable to afford newer equipment en masse, was left ill-equipped and forced to rely on its increasingly archaic military technology. The cataphract finally passed into the pages of history with the Fall of Constantinople on May 29, 1453, when the last nation to refer to its cavalrymen as cataphracts fell (see Decline of the Byzantine Empire).