The disaster in Egypt severely shook Athenian control of the Aegean, and for some years afterwards the Athenians concentrated their attention on reorganising the Delian League and stabilising the region. The Athenians responded to a call for assistance from Orestes, the son of Echecratides, King of Thessaly, to restore him after he was exiled. Together with their Boeotian and Phocian allies, the Athenians marched to Pharsalus. They were not able to achieve their goals because of the Thessalian cavalry and were forced to return to Athens not having restored Orestes or captured Pharsalus.