The Battle of Hyrba is the first battle between the Persians and Medians.

It is also the first battle after the Persians revolt.

These actions are led (for the most part) by Cyrus the Great, as it shifts the powers of the ancient Middle East.

The success of the battle leads to the creation of Persia's first empire, and begina Cyrus's decade long conquest of almost all of the known world.

Though the only authority with a detailed account of the battle is Nicolaus of Damascus, other well-known historians as Herodotus, Ctesias, and Strabo also mention the battle in their own accounts.

The outcome of the battle is such a great blow to Medes, that Astyages decides to personally invade Persia.

The hasty invasion will eventually lead to his downfall.

In turn, the former enemies of the Medes try to move against them, only to be stopped by Cyrus.

Thus a period of reconciliation begins, which facilitates a close relationship between the Persians and Medes, and enables Ecbatana, capital of Media, to pass to the Persians as one of Persia's capitals in their newly formed empire.