δι' ἐρημίας πολεμίων πορευόμενος → he marched on without finding any enemy, his route lay through a country bare of enemies
in-flaccĕo: ēre, v. n.,
I to become flaccid or weak; hence, trop., to become useless: inflaccebunt condiciones, Enn. ap. Non. 110, 14 dub. (Vahl. Enn. p. 142 reads: sin flaccebunt).