To relieve Conon, the Athenians assembled a new fleet composed largely of newly constructed ships manned by inexperienced crews. While this fleet was inferior to the Spartans, the Athenians employed new and unorthodox tactics, which allowed them to secure a dramatic and unexpected victory in the Battle of Arginusae, near Lesbos. The blockade of Conon by the Spartans was broken, the Spartan force was soundly defeated and Callicratidas was killed during the battle.