δι' ἐρημίας πολεμίων πορευόμενος → he marched on without finding any enemy, his route lay through a country bare of enemies
-ου, ὁ alejandrino ét. de Alejandría, Eratosth. y Didym. en St.Byz.s.u. Ἀλαξάνδρειαι.