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BATTLE // -423 BCE

Battle of Delium

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Overview

The Battle of Delium took place in 424 BC, during the Peloponnesian War. It was fought between the Athenians and the Boeotians, who were allies of the Spartans, and ended with the siege of Delium in the following weeks.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

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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6 sibling battles · 0 factions

Last verified July 2026
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