Chapter 5 follows the developments of combined arms after the Peloponnesian War with a specific focus on Iphicrates and his crucial innovations in altering the course of Greek warfare. His victory at Lechaeum demonstrates the ability of combined arms at the hands of a good general even when opposed by a combined arms force that is badly led. It also uses Xenophon’s Anabasis of the Ten Thousand and Agesilaus’ campaign in Asia to see how much more important combined arms was to Greeks when fighting outside of Greece than within it. It argues mainly that by the end of the Corinthian War all Greek states had learned to fully integrate light infantry and light cavalry into the battle plan, but heavy cavalry was still lacking.