Narses (also sometimes written Nerses; Armenian: Նարսես; Greek: Ναρσής; 478–573) was, with Belisarius, one of the great generals in the service of the Byzantine Emperor Justinian I during the Roman reconquest that took place during Justinian's reign. A Romanized Armenian, Narses spent most of his life as an important eunuch in the palace of the emperors in Constantinople.