 In this period, some dukes of Antioch, as well as those of Chaldia and Mesopotamia were thought to have such units under their command.Because of the Armenian presence in the Byzantine military in those areas, these three "themes" or districts were called "armenika themata".An Armenian contingent in the Byzantine army fought and terrorized the Arabs of Crete in 960-961 when Nicephorus Phocas invaded the island, and in 965, a contingent was sent to Cilicia as well.