The Lion's Cub

Alexander III of Macedon was born in 356 BC into a world his father was remaking. Philip II had inherited a peripheral, half-barbarous kingdom surrounded by enemies and had transformed it within twenty years into the dominant power of the Greek world — modernizing the Macedonian army into the most sophisticated fighting machine in history, equipping it with the sarissa (a 21-foot pike), professional pay, and siege artillery, and binding the nobility to the crown through military success. The army Alexander inherited was Philip's instrument; the war Alexander would fight was Philip's vision. The son's genius lay in execution.

Alexander's education under Aristotle at Mieza (343–340 BC) gave him not just philosophy, medicine, and science but a deep Homeric consciousness that shaped every decision of his military life. He carried the Iliad annotated by Aristotle into Asia. At Troy, before the campaign began, he ran naked around Achilles' tomb — not as theater but as genuine religious observance. He was Achilles in his own mind, and the self-image produced both his greatest courage and his most catastrophic choices.

He was eighteen when he commanded the left wing at Chaeronea (338 BC), destroying the Sacred Band of Thebes — 150 pairs of sworn lovers who fought as the elite of the Greek world and who had never been defeated. Philip's phalanx fixed the Athenian-Theban coalition while Alexander's cavalry broke through and drove into their rear. The Sacred Band died to the last man where they stood. Chaeronea made Greece Macedonian.

In 336 BC, Philip was assassinated at his daughter's wedding feast by a bodyguard with personal grievances, possibly manipulated by parties who have never been identified with certainty — including, in some ancient accounts, Olympias, Alexander's mother. Alexander moved within hours. He secured the army's loyalty, had potential rivals executed, and was proclaimed king at twenty. Within two years he had crushed revolts in Thessaly and Thrace, burned Thebes to its foundations as a warning to Greek ambition (sparing only the temples and the house of the poet Pindar), and extracted a renewal of the League of Corinth's commission to invade Persia.

In spring 334 BC, Alexander crossed the Hellespont with roughly 40,000 infantry, 5,000 cavalry, and supplies for thirty days — not enough to sustain a long campaign. He would have to win or starve. At Troy, he visited Achilles' tomb. A childhood friend challenged him to a footrace: Alexander refused, saying he would only run if the prize were a kingdom. He was twenty-one. He would never see Macedonia again.