Passage 10.22.3
αὖθις διὰ Θεσσαλίας ὁδεύσαντες ἐμβάλλουσιν ἐς τὴν Αἰτωλίαν· καὶ τὰ ἐς Καλλιέας Κόμβουτις οἱ ἐργασάμενοι καὶ Ὀρεστόριος ἦσαν, ἀνοσιώτατά τε ὧν ἀκοῇ ἐπιστάμεθα καὶ οὐδὲν τοῖς ἀνθρώπων τολμήμασιν ὅμοια. γένος μέν γε πᾶν ἐξέκοψαν τὸ ἄρσεν, καὶ ὁμοίως γέροντές τε καὶ τὰ νήπια ἐπὶ τῶν μητέρων τοῖς μαστοῖς ἐφονεύετο· τούτων δὲ καὶ τὰ ὑπὸ τοῦ γάλακτος πιότερα ἀποκτείνοντες ἔπινόν τε οἱ Γαλάται τοῦ αἵματος καὶ ἥπτοντο τῶν σαρκῶν.
Then, marching once again through Thessaly, they invaded Aetolia. Those who committed the atrocities against Callium were Combutes and Orestorius; indeed, these actions were the most impious of all that we have ever heard of, unmatched by any human daring. They exterminated the entire male population, killing alike the old men and the infants at their mothers' breasts; indeed, even the babies still nourished by milk—the Galatians, slaughtering them, drank their blood and feasted upon their flesh.