There, he came into discord with the Persians and was reduced to a subordinate to the King of Persia, Darius. During the Ionian Revolt however, Miltiades helped the revolting Greek with great success. In 493 B.C. he was chosen as the general of Athens (strategos) and in 490 B.C. he led the army of Athens to a significant victory against the Persians at the Plain of Marathon.
Afterwards, Miltiades completed a campaign against the islands that had supported the Persians, but was unsuccessful. Sick from gang green, he was convicted and fined 50 talents and most probably died in jail.