Battle of the Persian Border
The Battle of the Persian Border was the second encounter between the forces of Media and Persia.
Though not a decisive victory for Persia, it signaled the diminishing power of Media in Southwest Asia. It was the first battle Cambyses I had fought in, and the first which he had fought with his son, Cyrus the Great. The first major battle, which lasted two days, was an attempt to bring freedom to Persia. It also prompted the Persians to retire south, and fight a third battle.
It was narrated by Nicolaus of Damascus, and among others who also mentioned the Battle of Hyrba, but Herodotus does not mention this battle. Most historians on the battle consider Herodotus to be mentioning only the first and last battles in the war, which is partly based on the description of his two battles. At the border this became the first major battle between the two powers. Cyrus managed to escape the enemy without retreating, thus ending the battle and prolonging the struggle without a complete victory for Astyages, the king of the Medes. The next battle became the last stand for the Persians; as their very existence relied on the outcome of the war, which had to be won.
Cambyses (Old Persian Kambujiya): son of king Cyrus of Anšan, member of the Achaemenid dynasty, ruling as king in Anšan, the central part of Persia. In the first half of the sixth century BCE, Persia was subjected to the Medes, so he was a kind of vassal king.
According to the Greek researcher Herodotus, Cambyses was married to Mandane, the daughter of the Median leader Astyages; their son was the founder of the Achaemenid empire, king Cyrus the Great. This boy was born in or about 576 BCE, which leads to the conclusion that Cambyses was born somewhere c.600. It may be that his reign started in 580; it is certain that he died in 559 and Cyrus became king.