Passage 8.50.9
Φιλοποίμην δὲ τὴν τάξιν, ἣν τεταγμένους ἀπῆγεν ὀπίσω, ταύτην ὑπαλλάξας τὰ μάλιστα ἰσχυρὰ τῶν χωρίων πρὸς αὑτοῦ καὶ οὐ πρὸς τῶν πολεμίων ἐποίησεν εἶναι· κρατήσας δὲ τῇ μάχῃ Νάβιν καὶ τῶν Λακεδαιμονίων ἐν τῇ νυκτὶ καταφονεύσας πολλούς, δόξης ἔτι ἐς πλέον παρὰ τοῖς Ἕλλησιν ἤρθη.
Philopoemen, having reversed the order in which he had previously arranged his troops during the retreat, managed to turn the strongest positions toward himself rather than allowing them to remain with the enemy. After winning the battle against Nabis and killing many of the Lacedaemonians in the night, he gained even greater renown among the Greeks.