When the Roman governor of Egypt, Gaius Petronius, was notified that Kushite troops had raided the Nile islands of Philae and Elephantine, he knew that he must take drastic measures to regain control of the Egyptian islands. Kush had been a thorn in Egypt’s side throughout the first century BC. Knowing their capabilities, Gaius Petronius mobilized 10,000 infantry and 800 cavalry to regain the Southern frontier that Augustus had established between Kush and Egypt.