Pausanias says that the opening campaign was a surprise attack on Ampheia by a Spartan force commanded by Alcmenes, Agiad king of Sparta, in the second year of the 9th Olympiad. The end of the war was the abandonment of Mt. Ithome in the first year of the 14th Olympiad. The time of the war is so clearly fixed at 743/742 BC through 724/722 BC that other events in Greek history are often dated by it. Pausanias evidently had access to a chronology of events by Olympiad. The details of the war are not so certain but Pausanias gives an evaluation of his two main sources, the epic poem by Rianos of Bene for the first half and the prose history of Myron of Priene for the second half. Nothing survives now of the sources except fragments.