Passage 7.16.3
ὡς δὲ ἀντεπῆγε καὶ ὁ Μόμμιος, οἱ μὲν ἐς τὸ ἱππικὸν τῶν Ἀχαιῶν ταχθέντες αὐτίκα ᾤχοντο φεύγοντες, τῆς Ῥωμαίων ἵππου μηδὲ τὴν πρώτην ἔφοδον ὑπομείναντες· ὁ δὲ πεζὸς στρατὸς ἀθύμως μὲν εἶχεν ἐπὶ τῶν ἱππέων τῇ τροπῇ, δεξάμενοι δὲ τὴν ἐμβολὴν τοῦ ὁπλιτικοῦ τοῦ Ῥωμαίων βιαζόμενοί τε τῷ πλήθει καὶ ἀπαγορεύοντες τοῖς τραύμασιν ὅμως ἀντεῖχον ὑπὸ τοῦ θυμοῦ, πρίν γε δὴ Ῥωμαίων λογάδες χίλιοι προσπεσόντες κατὰ τὰ πλάγια ἐς τελέαν τοὺς Ἀχαιοὺς φυγὴν κατέστησαν.
When Mummius also advanced to confront them, those who had been assigned to the Achaean cavalry immediately turned and fled, unable even to withstand the first charge of the Roman horse. The infantry was dispirited by the rout of their horsemen, yet when they received the attack of the Roman foot-soldiers, fiercely pressed by superior numbers and weakened by their wounds, they nevertheless held their ground through sheer determination—until finally a thousand picked Romans fell upon their flank and forced the Achaeans into a full and total flight.