References to Eastern Roman cataphracts seemed to have disappeared in the late 6th century, as the manual of war known as "Strategikon of Maurice", published during the same period, made no mention of cataphracts or their tactical employment. 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 Eastern Roman army from a largely defensive force into a largely offensive force. The cataphracts deployed by the Eastern Roman 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 Empire's strong Greek influence, as opposed to the Romanized term "Cataphractarii", which subsequently fell out of use.