The Athenian Navy faced a crushing defeat at the Battle of Eritrea in 411 BCE during the Peloponnesian War. This pivotal conflict saw Athenian forces attempting to secure control over the Hellespont and disrupt Spartan supply lines. However, internal betrayal played a significant role in their downfall, as Athenian commanders were undermined by dissent and poor communication. The strategically positioned Spartan fleet, supported by local allies, exploited these weaknesses, leading to a resoundin