Passage 10.20.5
Ἀθηναίων δὲ στρατηγὸς μὲν Κάλλιππος ἦν ὁ Μοιροκλέους, καθὰ ἐδήλωσα καὶ ἐν τοῖς προτέροις τοῦ λόγου, δύναμις δὲ τριήρεις τε αἱ πλώιμοι πᾶσαι, πεντακόσιοι δὲ ἐς τὸ ἱππικόν, χίλιοι δὲ ἐτάσσοντο ἐν τοῖς πεζοῖς· καὶ ἡγεμονίαν οὗτοι κατʼ ἀξίωμα εἶχον τὸ ἀρχαῖον. βασιλέων δὲ ξενικὰ πεντακόσιοί τε ἐκ Μακεδονίας καὶ ἐκ τῆς Ἀσίας ἴσοι σφίσιν ἀφίκοντο ἀριθμόν· ἄρχοντες δὲ τῶν μὲν παρʼ Ἀντιγόνου πεμφθέντων Ἀριστόδημος ἦν Μακεδών, τῶν δὲ παρὰ Ἀντιόχου τε καὶ ἐκ τῆς Ἀσίας Τελέσαρχος τῶν ἐπὶ Ὀρόντῃ Σύρων.
The Athenians had as their general Callippus, son of Moirokles, as I have also mentioned previously in this account. Their force consisted of all available warships, five hundred cavalry, and a thousand men arranged in the infantry; the leadership belonged to these by ancient precedent due to their prestige. Among the king's troops five hundred mercenaries came from Macedonia, and an equal number joined them from Asia. Aristodemus, a Macedonian, commanded the contingent sent by Antigonus, while Telesarchus, one of the Syrians who dwell along the Orontes, led those sent by Antiochus from Asia.