The Battle of Pelusium was the first major battle between the Persian Empire and Egypt, soon to be conquered by its growing foe. The Persians easily routed the Egyptians and won a great battle, and they did so in the following way, according to Polyaenus. The Egyptians held cats to be sacred and inviolate, and refused to harm one for any reason. Cambyses, who disdained such religious devotion, took advantage of this. He had his men carry cats in front of them as they advanced, as shields, preventing the Egyptians from launching their arrows at the Persians, lest they wound and kill the cats instead. In this way, the Persians ended the independence of Egypt, which it would not regain for more than a millennium.