If this be true, it follows that the office of polemarch must have lost its military importance, which was not the case, inasmuch as the polemarch at Marathon gave the casting vote in favour of immediate battle.
It is the more remarkable that no incidents are recorded in the period between Marathon and Salamis, seeing that at the time of the Isthmian Congress the war is described as the most important one then being waged in Greece (Herod.
Sparta had despatched an army in 490 to aid Athens in repelling the armament sent against it by Darius under the command of Datis and Artaphernes: but it arrived after the battle of Marathon had been fought and the issue of the conflict decided.
Accordingly he drove away from Marathon some cows which belonged to Theseus.
In the Persian War Paros sided with the Persians and sent a trireme to Marathon to support them.
None the less, till Marathon the Persians were successful in discomfiting every enemy before he could close, whether that enemy consisted of similarly accoutred bowmen (as the Medes), of cavalry armed with the lance (as the Lydians), or of heavily armoured warriors (as the Babylonians, Egyptians and Greeks).
On the fields of Marathon and Plataea, the Persian archers succumbed to the Greek phalarn of hoplites; but the actual decision was effected by Themistocles who had meanwhile created the Athenian fleet which at Salamis proved its superiority over the Perso-Phoenician armada, anc thus precluded beforehand the success of the land-forces.
He then attacked the firebreathing bull of Marathon and brought it alive to Athens, where he sacrificed it to Apollo Delphinius.
The interference of Eretria in the Ionian revolt (498) brought upon it the vengeance of the Persians, who captured and destroyed it shortly before the battle of Marathon (490).
After the defeat of Marathon he returned to Asia.