Passage 8.10.6
ἐπὶ δὲ τῷ εὐωνύμῳ πᾶν τὸ ἄλλο Ἀρκαδικὸν ἐτάσσοντο, ἄρχοντες δὲ κατὰ πόλεις τε ἦσαν καὶ Μεγαλοπολιτῶν Λυδιάδης καὶ Λεωκύδης· Ἀράτῳ δὲ ἐπετέτραπτο καὶ Σικυωνίοις τε καὶ Ἀχαιοῖς τὸ μέσον. Λακεδαιμόνιοι δὲ καὶ Ἆγις ἐπεξέτειναν τὴν φάλαγγα, ὡς τῶν ἐναντίων τῷ στρατεύματι ἀντιπαρήκοιεν· τὸ μέσον δὲ Ἆγις καὶ οἱ περὶ τὸν βασιλέα εἶχον.
On the left wing was positioned all the rest of the Arcadian force, with commanders appointed from their respective cities, among whom were Lydiades and Leocydes from Megalopolis. The center had been entrusted to Aratus, who commanded both the Sicyonians and the Achaeans. The Lacedaemonians and Agis extended their battle line to match the opposing army, and the center was held by Agis himself along with those who accompanied the king.