τὸ εὐώνυμον κέρας εὐθὺς ἀπερραγὲν ἔφυγε
From LSJ
ἐφ' ἁρμαμαξῶν μαλθακῶς κατακείμενοι → reclining softly on litters, reclining luxuriously in covered carriages
ἐφ' ἁρμαμαξῶν μαλθακῶς κατακείμενοι → reclining softly on litters, reclining luxuriously in covered carriages
the left wing at once broke and fled