The army of Tomyris was tricked by Cyrus the Great. They found what they thought was an abandoned camp of the Persians. It looked like they had run away! Weapons, tents, food, and barrels of wine were left behind in their hurry to retreat.
But wary! The wine was spiked with sleeping medicine, and the soldiers of Tomyris, celebrating what they thought was an easy victory, drank deeply. All of them fell fast asleep, and at night the Persians came back and captured or killed almost the entire army!
There is a reason why he is called Cyrus the Great, the emperor of the largest empire since Alexander!