Battle of Arginusae
The Battle of Arginusae in August 406 B.C. was part of the Second Peloponnesian War between the Greek city states of Athens and Sparta and their allies. It was near the end of the war, although neither side knew the war would soon end at that time.
A new Athenian fleet had been built to help the fleet being blockaded in Mitylene Harbor. The Athenians won a great victory over the Spartan fleet with the Spartan commander Callicratidas drowning during the fight. Sparta sued for peace but Cleophon once again rejected the offer, much to the future sorrow of Athens based on events that were to come.
Encyclopedia of Military History, Dupuy & Dupuy, 1979