Passage 4.7.5
ὡς δὲ συνῄει τὰ στρατόπεδα, τοῖς μὲν ὁπλίταις καὶ ἀφειδῶς ὅμως καὶ ἀκρατέστερον ὑπὸ τοῦ μίσους φερομένοις ἐπὶ ἀλλήλους οὐ παρέσχεν ἐλθεῖν ἐς χεῖρας ἡ χαράδρα διείργουσα· τὸ δʼ ἱππικὸν καὶ οἱ ψιλοὶ συμμίσγουσι μὲν κατὰ τὸ ὑπὲρ τὴν χαράδραν, ἦσαν δὲ οὔτε πλῆθος οὔτε ἐμπειρίᾳ διαφέροντες οὐδέτεροι, καὶ διὰ τοῦτο ἰσόρροπος ἡ μάχη σφίσιν ἐγένετο.
When the armies approached one another, the hoplites, carried impetuously against their foes without moderation and with relentless hatred, were prevented by the dividing ravine from engaging in hand-to-hand combat. The cavalry and the light-armed troops, however, clashed above the ravine, but neither side was superior in numbers or experience, and thus the battle between them was evenly balanced.