δι' ἐρημίας πολεμίων πορευόμενος → he marched on without finding any enemy, his route lay through a country bare of enemies
Ar. and P. ἀδεῶς, V. εὐθαρσῶς, θρασυσπλάγχνως, ἀδειμάντως, ἀτρέστως, ἄτρεστα; see boldly.