The Athenians under Xenophon marched into Thrace to attack Spartolos. They destroyed the crops outside Spartolos and began negotiating with pro-Athenian factions in Chalcidice, but the anti-Athenian factions asked for help from Olynthus. An army from Chalcidice, Spartolos, and Olynthus met the Athenians in battle, but their hoplites were defeated and they retreated to Spartolus; their cavalry, however, was victorious against the Athenian troops. Reinforcements soon arrived from Olynthus, and they launched a second attack on the Athenians. The Athenians panicked and were routed, with all of their generals and 430 other men killed.
