Battle of Pteria

At the Battle of Pteria in 547 BC, the Persian forces of Cyrus the Great fought a drawn battle with the invading Lydian forces of Croesus, forcing Croesus to withdraw back west into his own kingdom.

Formerly, the Lydians and Medes had arranged that the natural boundary between the two empires would be the Halys River. Croesus learned of the sudden Persian uprising and defeat of his longtime rivals, the Medes. He attempted to opportunistically use these set of events to expand his borders upon the eastern frontier of Lydia. He made an alliance with Chaldea, Egypt and several Greek city-states, including Sparta.

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