What form of armored heavy cavalry used in ancient warfare did Grivpanvar fought?
Cataphract A cataphract was a form of armored heavy cavalry used in ancient warfare by a number of peoples in Western Eurasia and the Eurasian Steppe.
Cohors IV Aquitanorum equitata c.R. Cohors quarta Aquitanorum equitata civium Romanorum ("4th part-mounted Cohort of Aquitani Roman citizens") was a Roman auxiliary mixed infantry and cavalry regiment. It was probably originally raised in the Julio-Claudian era, perhaps under Augustus after the subjugation of the Aquitani in 26 BC. Alternatively, it may have been raised in a later levy of Aquitani after 14 AD. Unlike most Gauls, the Aquitani were not Celtic-speaking but spoke Aquitanian, a now extinct non Indo-European language closely related to Basque. Some tribes in Aquitania were Celtic-speaking, however e.g. the Bituriges.