Alexander the Great is considered one of the most successful commanders of all time and was known to be undefeated in battle. He is mentioned in the Bible as well as the Qur'an. When asked to name other great military leaders, Caesar reportedly said Alexander was the only great one. Born in 356 B.C., the son of Philip II of Macedonia, Alexander the Great was educated by Aristotle, became a consummate horseman, and commanded a wing of his father's army all when he was still a teenager. By the time of his death at age thirty-two, he had united Greece and amassed an empire that stretched from the Adriatic Sea to the Indus River and included all of Persia and most of Egypt. He ruled as the shah of Persia, a pharaoh of Egypt by right of conquest, and the crowned king of Asia.