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BATTLE // -423 BCE

Battle of Delium

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Source · Wikipedia

Significance

The Battle of Delium, fought in 424 BC during the Peloponnesian War, was an engagement between Athens and Boeotia, the latter fighting as a Spartan ally. The battle resulted in Athenian casualties of 1,200 from a force of 18,000, with the Boeotian force of 18,500 under Pagondas facing an Athenian army under Hippocrates. The engagement did not conclude the contest immediately; it was followed in the subsequent weeks by the siege of Delium itself, indicating that the battle opened rather than closed operations in the area. The defeat represented a significant reverse for Athens against a Spartan allied state, reinforcing Boeotian military standing within the broader Peloponnesian War coalition.

Forces & casualties

Troop strength

  • Athens18,000
    medium
  • Boeotia18,500
    medium

Both sides were near-evenly matched in numbers

Casualties

  • Athens1,200
    medium7% loss rate

Commanders (2)

Boeotia

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Last verified July 2026
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