Zinvana
Most kings spend their twenties learning how to rule. Alexander spent his twenties conquering Persia, Egypt, and most of central Asia — and pushing his army past every limit they thought they had.
When Philip II of Macedon was murdered in 336 BCE, his son inherited a small mountain kingdom on the edge of the Greek world. Twelve years later that kingdom stretched from the Adriatic to the Punjab. No one had ever done anything close. No one really has since.
What follows isn't the polished, statue-version of Alexander. It's the messy, human one — the brilliant tactician who also drank too much, the cultural diplomat who burned Persepolis on a whim, the man who treated his soldiers like family until they begged him to turn around.
A prince who was raised to be a weapon
Alexander was born in Pella in July 356 BCE, the son of King Philip II and Olympias, a princess from Epirus with a serious reputation for snake-handling and a famously sharp tongue. From the start, his upbringing was custom-built for one thing: succeeding his father.
By age 13, Aristotle was his private tutor. The arrangement only lasted three years, but the imprint was permanent — Alexander carried a copy of the Iliad annotated by Aristotle in a custom box for the rest of his life. He slept with it under his pillow next to a dagger.
By 16 he was regent of Macedon while Philip campaigned in Byzantium. By 18 he was leading the cavalry charge at Chaeronea, the battle that broke Greek resistance to Macedonian rule. He wasn't being protected. He was being aimed.
Taking the throne the hard way
Philip was assassinated at his daughter's wedding in 336 BCE. The killer was a disgruntled bodyguard named Pausanias, but rumours that Olympias (and possibly Alexander himself) had a hand in it have followed the family ever since. Either way, the result was clean: Alexander, twenty years old, stepped over his father's body into the kingship.
The first two years were brutal housekeeping. Cousins with rival claims were killed. Thebes revolted; Alexander razed the city, sold 30,000 survivors into slavery, and spared only the temples and the house of the poet Pindar. Greek city-states that had been thinking about rebellion suddenly weren't.
By 334 BCE the home front was quiet. The army was fed, paid, and angry. He pointed it east.
The three battles that ended Persia
The Persian Empire in 334 BCE was the largest the world had ever seen. It dwarfed Macedon in money, manpower, and territory by orders of magnitude. Alexander invaded with around 40,000 men and never went home.
He beat the Persians at Granicus a few weeks after landing in Asia Minor, smashing their cavalry on the riverbank with a personal charge that nearly got him killed (a Persian sword cleaved his helmet; a friend killed the swordsman from behind). He beat them again at Issus in 333 BCE, where King Darius III himself ran from the field, leaving his mother, wife, and daughters in Alexander's tent.
Then came Gaugamela in October 331 BCE — the big one. Darius had assembled an army that ancient sources put at over 200,000 men, with scythed chariots and war elephants. Alexander had maybe 47,000. He won by refusing the obvious play: instead of meeting Darius head-on, he marched his line at an angle, baited a gap to open in the Persian centre, and rammed the Companion cavalry straight at the king. Darius ran again. He never raised another army. The Achaemenid empire, after two centuries, was over.
"There is nothing impossible to him who will try." — Attributed to Alexander, before crossing into India
What he actually did differently
Plenty of generals before Alexander had decent armies. Three things made him different.
The hammer-and-anvil. His infantry — the famous sarissa-wielding phalanx — was the anvil: it pinned the enemy in place. The Companion cavalry, led by Alexander himself, was the hammer that swung around the flank. It only worked because both halves trusted each other completely, and because Alexander always rode at the front of the cavalry charge.
Sieges no one thought possible. Tyre was an island city a kilometre offshore with walls 150 feet high. Alexander built a causeway out to it from scratch. It took seven months. When the city fell he crucified 2,000 of the defenders along the shoreline. After that, cities tended to surrender.
Speed. He moved his army faster than ancient logistics should have allowed, partly by stripping baggage trains down to almost nothing and partly by sheer willpower. At Persepolis he covered 400 miles of mountain passes in winter to catch a Persian general before he could escape.
Trying to govern what he'd taken
Conquering was the easy part. By 330 BCE Alexander controlled an empire that included Greeks, Egyptians, Babylonians, Persians, Bactrians, and dozens of peoples in between — speaking different languages, worshipping different gods, used to being ruled in different ways.
His answer was fusion. He kept Persian satraps in their jobs. He started wearing Persian court dress, which his Macedonian veterans hated. He married Roxana, a Bactrian noble's daughter, and later married Darius's daughter Stateira too. He ordered 10,000 of his soldiers to take Persian wives in a mass wedding at Susa.
And he founded cities — at least 20 named Alexandria, plus dozens more under different names — planted along trade routes to seed Greek language, coinage, and architecture across the empire. The one in Egypt would become the largest city in the Mediterranean for the next thousand years.
The drinking, the temper, the killings
Alexander's later years are darker than the legend suggests. In 328 BCE, drunk at a banquet in Samarkand, he ran his oldest friend Cleitus the Black through with a spear in front of the whole court. Cleitus had saved his life at Granicus. Alexander tried to kill himself afterwards and refused food for three days. Months later he had Callisthenes, his official historian, executed for refusing to bow. The further east he went, the less anyone could rein him in.
The army that finally said no
By 326 BCE Alexander was in the Punjab. He'd just beaten the Indian king Porus at the Hydaspes — one of his hardest fights, against war elephants, in a thunderstorm, after fording a flooded river at night. He wanted to keep going. He'd heard there was an even greater empire on the Ganges.
His soldiers, after eight years of marching, refused. They had been gone from home for so long that some of them had grown sons in the army with them. Alexander sulked in his tent for three days. Then he turned around.
The way back was a disaster. He marched a third of the army through the Gedrosian desert, partly out of pride — he'd heard Cyrus the Great had failed to cross it. Thousands died of thirst. By the time he got to Babylon in 323 BCE, he was a different man.
A death no one has ever explained
He fell ill on June 11, 323 BCE, at thirty-two, after a long night of drinking with a friend. The fever lasted twelve days. Modern theories range from typhoid to malaria to West Nile virus to deliberate poisoning — possibly by his own generals, possibly by Aristotle's nephew. We will never know.
Asked on his deathbed who should inherit the empire, he reportedly whispered "to the strongest." Within forty years the empire had broken into three rival kingdoms ruled by his former generals: Ptolemaic Egypt, the Seleucid empire, and Antigonid Macedonia. None of them ever reunited.
What he actually changed
You can argue forever about whether Alexander was a visionary or a maniac — historians have, for 2,300 years. What's harder to argue with is the scale of what he set in motion.
Greek became the trade language of half the ancient world for centuries. Greek philosophy, art, and science moved east; Persian, Egyptian, and Indian ideas moved west. The Hellenistic period that followed produced Euclid, Archimedes, Eratosthenes (who measured the Earth), and the Library of Alexandria. The New Testament was written in Greek for an audience that existed because Alexander had made Greek the language of the eastern Mediterranean.
Julius Caesar wept at Alexander's statue at thirty-three because, he said, Alexander had conquered the world by his age and Caesar had done nothing. Napoleon kept a copy of Alexander's biography in the field. Even now, almost every general's bookshelf has him on it.
He wasn't a saint. He probably wasn't even a good person. But thirty-two years and one short campaign rewrote the map of the world, and that map is still partly his.
Sources include Plutarch's Life of Alexander, Arrian's Anabasis, and modern scholarship by Robin Lane Fox and Mary Beard. This article was reviewed by the Zinvana editorial team.