Histories

So when the Medes marched out and engaged with the Persians, those who were not in on the plan fought, while others deserted to the enemy, and most were deliberate cowards and ran.

Thus the Median army was shamefully scattered. As soon as Astyages heard, he sent a threatening message to Cyrus: “Nevertheless, Cyrus shall not rejoice”;

and with that he took the Magi who interpreted dreams, who had persuaded him to let Cyrus go free, and impaled them; then he armed the Medes who were left in the city, the very young and very old men.

Leading these out, and engaging the Persians, he was beaten: Astyages himself was taken prisoner, and lost the Median army which he led.