But according to J. Birkenmeier in "The development of the Komnenian army: 1081–1180", units of 'Kataphraktoi' (cataphracts) were still being used during the 12th century. The Komnenian restoration of the Byzantine Empire during that century created a new kind of Byzantine army, which is known as the Komnenian army. Yet it seems that the cataphract was eventually superseded by other types of armoured cavalry. The emperor Manuel I Komnenos, for example, re-equipped his elite cavalry in the style of western knights.