Athens trapped 420 Spartan hoplites on Sphacteria, forcing Sparta to seek peace and shifting momentum in the Peloponnesian War.
Key Facts
- Year
- 425 BC
- Athenian fleet strength
- 50 triremes (plus 5 garrison triremes)
- Spartan fleet strength
- 43 triremes
- Spartans trapped on Sphacteria
- 420 hoplites, 120 of Spartiate class
- Athenian garrison size
- ~600 men, 90 hoplites
- Spartan Attica expedition cut short
- Only 15 days before recalled
By the Numbers
Location
Cause → Event → Consequence
An Athenian fleet, caught by a storm, was driven ashore at Pylos in Spartan-controlled Messenia. The general Demosthenes persuaded the soldiers to fortify the peninsula, leaving a garrison of roughly 600 men when the main fleet departed. This Athenian foothold in Spartan territory alarmed Sparta's leadership and compelled the Spartan army, then ravaging Attica, to abort their campaign and march home, while the Spartan fleet at Corcyra sailed south to confront the threat.
Demosthenes defended Pylos with five triremes and about 600 men against a Spartan force of 43 triremes and a large land army. He positioned his best troops where he anticipated the amphibious assault and held off simultaneous land and sea attacks for a day and a half. When the 50-strong Athenian fleet arrived from Zacynthus, the Spartans had failed to blockade the harbour; the Athenians sailed in, decisively defeated the Spartan fleet, and seized control of the bay.
The Athenian victory trapped 420 Spartan hoplites, including 120 Spartiates, on the island of Sphacteria. Sparta's government, alarmed at the prospect of losing elite citizens, surrendered its entire fleet as a guarantee and sent ambassadors to Athens seeking peace. Negotiations failed, and the hoplites were eventually captured at the Battle of Sphacteria. Pylos remained an Athenian base used for raids into Spartan territory and as a refuge for Helot fugitives.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Demosthenes, Sophocles, Eurymedon.
Side B
1 belligerent
Agis.