神聖戦争
Philip had not involved himself in the Sacred War since his victory at the Crocus Field in 352 BC. In the meantime, it had become clear that the Sacred War could only be ended by outside intervention. The Phocians had occupied several Boeotian cities, but were running out of treasure to pay their mercenaries; conversely, the Thebans were unable to act effectively against the Phocians. The Phocian general Phalaikos was removed from his command in 347 BC, and three new generals appointed, who successfully attacked Boeotia again.