Archidamus IV

Indeed, after having taken Athens, the king of Macedonia Demetrios Poliorketes invaded the Peloponnese in order to fortify his hold of Greece before fighting the other Diadochi, the former generals of Alexander the Great.

[2][3] Archidamus was appointed at the head of the army sent to meet Demetrios, perhaps because the other king Areus I was still a minor, while the Agiad regent Cleonymus—the most important Spartan commander at the time—was discredited by his failure in a mercenary expedition in Italy.

[4][5] Few ancient sources mention this war: some briefs notes are found in Plutarch and the geographer Pausanias, as well as two anecdotes from Polyaenus, who all wrote four centuries after the event.

[9][10] The Macedonian king however won the battle thanks to a stratagem; he set the vegetation on fire, which the northern wind blew towards the Spartans and forced them to flee.

[17] The Spartans then restored the city walls that had been built during the reign of Archidamus' father in preparation for a siege, but Demetrios actually left the Peloponnese to fight his enemy Lysimachos in northern Greece.