The Corinthian War: Athens vs. Sparta Revisited

Following the end of the Peloponnesian War in 404 BCE, Sparta emerged as the dominant power in Greece. But its harsh rule and expansionist policies soon bred resentment—even among former allies. The Corinthian War (395–387 BCE) was a complex and volatile conflict, in which a coalition of Greek city-states, supported by Persia, rose up to challenge Spartan hegemony. This war reshaped Greek alliances, highlighted the fragility of unity, and marked the return of Athens as a military force.

1. Background: Sparta’s Harsh Rule After the Peloponnesian War

After defeating Athens, Sparta imposed pro-Spartan oligarchies and garrisons throughout the Greek world. Many cities, including Corinth, Thebes, and Argos, grew resentful of:

• Spartan interference in local politics

• Heavy-handed military occupation

• Aggressive foreign campaigns, including those in Asia Minor

Meanwhile, Athens—though politically weakened—began to recover economically and militarily.

2. The Spark of War

In 395 BCE, growing tensions exploded when Thebes and its allies clashed with Sparta over Boeotian territory. What began as a regional dispute quickly escalated into a pan-Hellenic conflict.

Anti-Spartan coalition (later known as the Corinthian League):

• Athens

• Thebes

• Corinth

• Argos

• Backed by the Persian Empire, eager to curb Spartan influence in Asia Minor

This alliance formed a powerful front against Sparta, which now found itself fighting on multiple fronts—on land and at sea.

3. Major Campaigns and Shifting Fortunes

The war was fought across central and southern Greece, with key battles and strategic maneuvers:

• Battle of Haliartus (395 BCE): Spartan leader Lysander was killed in Boeotia, a major morale boost for the allies.

• Naval resurgence of Athens: With Persian support, Athens rebuilt part of its fleet and even began restoring the Long Walls and some influence in the Aegean.

• Battle of Coronea (394 BCE): A costly victory for Sparta, showing they could still dominate in hoplite warfare, though at great expense.

• Persian betrayal: Ironically, Persia shifted sides again by the war’s end, supporting Sparta to prevent a united Greek front against Persian holdings in Ionia.

4. The King's Peace (Peace of Antalcidas) – 387 BCE

After years of costly stalemate, Persia brokered a peace between the warring Greek states:

• Named after Spartan diplomat Antalcidas

• Guaranteed autonomy for all Greek cities—but placed Ionia and Cyprus under Persian control

• Athens had to abandon its new naval empire

• Sparta was confirmed as the enforcer of the peace, reinforcing its dominant position (temporarily)

Irony: The war that had begun to check Spartan aggression ended up re-legitimizing Spartan dominance, but at the cost of Greek independence in Asia Minor.

5. Consequences and Legacy

• Athens regained influence and began rebuilding its alliances, laying the groundwork for the Second Athenian League.

• Sparta's reputation was tarnished by dependence on Persia and by continued interference in Greek city affairs.

• Persia played Greece skillfully, using diplomacy and funding to keep the Greeks divided.

• The war revealed the instability of Greek alliances, driven more by shifting rivalries than by shared goals.

Conclusion

The Corinthian War was less about ideology and more about power politics in the fractured post-Peloponnesian world. It showed that no single city-state could dominate Greece for long, and that even bitter enemies like Athens and Persia could become allies when convenient. Though the war ended without decisive victory for the anti-Spartan coalition, it set the stage for continued conflict and realignment, eventually leading to the rise of new powers like Thebes—and later, Macedon.