 Returning to Sparta in 395 BC, Lysander was instrumental in starting a war with Thebes and other Greek cities, which came to be known as the Corinthian War.The Spartans prepared to send out an army against this new alliance of Athens, Thebes, Corinth and Argos (with the backing of the Persians).The Spartans arranged for two armies, one under Lysander and the other under Pausanias, to rendezvous at and attack the city of Haliartus, Boeotia.