Passage 4.8.12
ταύτην τὴν μάχην παρὰ ἀμφοτέρων ἢ μόνα ἢ μάλιστα ἐμαχέσαντο τὰ ὁπλιτικά. οἱ δὲ ἐπὶ τῶν ἵππων ὀλίγοι τε ἦσαν καὶ οὐδὲν ὥστε καὶ μνημονευθῆναι διεπράξαντο· οὐ γάρ τοι ἀγαθοὶ τότε ἱππεύειν ἦσαν οἱ Πελοποννήσιοι. τῶν δὲ Μεσσηνίων οἱ ψιλοὶ καὶ οἱ παρὰ Λακεδαιμονίοις Κρῆτες οὐδὲ συνέμιξαν ἀρχήν· τῷ γὰρ πεζῷ τῷ σφετέρῳ κατὰ τρόπον ἔτι ἑκάτεροι τὸν ἀρχαῖον ἐπετάχθησαν.
In this battle chiefly, or rather entirely, the heavy infantry fought for both sides. The horsemen were few and accomplished nothing worthy even of mention; indeed, the Peloponnesians were at that time not particularly skilled at horsemanship. The Messenian light-armed troops and the Cretans in the Lacedaemonian service did not even engage at all; each group was appointed in the traditional manner to support the regular infantry formation on their respective sides.