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Alexander the Great (20/21 July 356 BC–10/11 June 323 BC) was King of Macedon from 336 to 323 BC (succeeding Philip II and preceding Alexander IV and Philip III) and Pharaoh of Egypt from 332 to 323 BC and King of Persia from 330 BC, following the fall of Persepolis, until his death in 323 BC. Alexander was one of history's most successful military commanders, conquering Greece, the entire Persian Empire, and parts of the Indian subcontinent with remarkable success, never having lost a pitched battle. By his death at age 32, he had created one of the largest empires of the ancient world, spread Hellenistic civilisation from the Balkans to Egypt, Central Asia, and the Indian Subcontinent, and become known as an unparalleled military genius. However, his death in 323 BC without a clear heir led to the Wars of the Diadochi between his competing generals, ultimately resulting in the fragmentation of his empire into several Hellenistic kingdoms.

Biography[]

Alexander as a young prince

Alexander as a young prince

Arguably the most successful military commander of all time, Alexander of Macedon conquered an empire extending from Greece to India in a life that lasted a mere 32 years. His father, Philip II, ensured that he was blooded in war at an early age.

As a youth, Alexander famously tamed a wild horse named Bucephalus, demonstrating exceptional courage and intelligence. Bucephalus would become his trusted steed throughout his military campaigns and was honoured with a city named Bucephala in his memory. Alexander was tutored by the philosopher Aristotle, who instilled in him a passion for philosophy, science, and literature. This education profoundly influenced his later approach to governance and cultural exchange.

At the Battle of Chaeronea, the key encounter in Philip's campaign to establish Macedonian dominance over the Greek city-states, the 18-year-old Alexander was awarded command of the left wing of Philip's line in battle. He came through the test with flying colours, the first to force a breach in the enemy line. Alexander inherited from his father the ambitious project for an invasion of the Persian Empire. As soon as his hold on the Macedonian throne was secure, he campaigned in the Balkans and Greece to quell opposition before leaving for Asia.

Attacking Persia[]

Alexander in battle armour

Alexander in battle armour

Alexander's infamous destruction of the rebellious city of Thebes was the first of many examples of his ruthless use of terror to deter potential revolt. By 334 BC he was ready to cross the Hellespont into Persian-ruled Anatolia, heading an army consisting of some 40,000 infantry and 5,000 cavalry.

The expedition was carefully prepared, with siege equipment in support and supply ships shadowing the army's moves along the coast. At the River Granicus in Anatolia, Alexander encountered an army assembled by the local Persian governor. It was nearly his last battle, for recklessly leading the cavalry charge across the river, he was surrounded and struck in the head but saved by his companion Cleitus the Black. His boldness, nonetheless, carried the day. 

The fate of the expedition looked very uncertain for a time. Some Greek cities of western Anatolia proved less than enthusiastic about being liberated by Alexander's army. Meanwhile, the Persians delivered a potentially deadly strategic counter-punch, employing Greek mercenary forces to thrust through the Aegean toward Greece and Macedon itself.

Defeating Darius[]

When Alexander's army marched into Syria in the winter of 333 BCE, it was reasonable for the Persian emperor, Darius III, to believe that the Macedonians were falling into a trap, for his much larger forces were advancing westward to crush the invaders. But Alexander was confident that if he could bring the Persians to battle, he would defeat them. The two armies met on the plain at Issus. Darius adopted a prudent defensive posture; Alexander gambled on an all-out attack.

The superior aggression of the Macedonian cavalry, led by Alexander in person, carried the day, driving in the Persian left flank. Darius fled to avoid capture, his army totally shattered. Alexander found the whole eastern Mediterranean opened up to conquest. Pressing south into Egypt, he was greeted as a successor to the pharaohs and founded the city of Alexandria, which became a major centre of Hellenistic culture.

For most leaders this would surely have been the moment for consolidation after an already awesome triumph. Alexander thought only of total victory over Persia. He forced Darius to give battle at Gaugamela where the Macedonian cavalry again achieved a victory against great numerical odds.

Ruling style[]

Alexander in 331 BC.

Alexander in 331 BC.

Alexander continued to campaign, asserting his authority over the Persian empire's provinces farther to the east. His relations with his followers, changed by the scale of his success, became intermittently fraught. His style of command had always been like that of a tribal warband leader. He fought shoulder to shoulder with his companions, and he ate and drank with them (the latter to excess). Yet his style of leadership - as an "equal" with senior authority - sat uneasily among the triumphant Alexander's pretensions. He claimed descent from the demigod Heracles and the legendary hero Achilles. There were plots, tensions, and several mutinies among his exhausted and disillusioned troop. Alexander had his second-in-command, Philotas, executed and killed another close companion, Clitus the Black, in a drunken argument between the two men.

Alexander's death

Alexander's death

Nothing sated Alexander's thirst for military adventure. In 326 BCE, he invaded the northwestern Indian subcontinent (modern-day Pakistan), overcoming stiff resistance at the battle of Hydaspes, where the Macedonians learned to counter Indian war elephants. Losses in the battle were severe, and soon after, Alexander's weary and homesick troops refused to march further east, forcing him to turn back at the Hyphasis (Beas) River. The soldiers forced him to turn back along the Indus to the sea. En route Alexander suffered a severe wound while leading an attack on Malli near the River Hydraotes. He finally arrived back in Persia in 325 BCE after a harrowing desert march unwisely undertaken. His mind was still full of plans for campaigns into the Arabian Peninsula and possibly Carthage or western Libya, though these remained unrealised due to his untimely death.

Alexander retained many Persian satraps and administrative customs, promoting a fusion of Greek and eastern traditions. He encouraged intermarriage between his Macedonian officers and Persian nobility as a symbol of unity between conqueror and conquered. He faced numerous revolts across his empire, including in Bactria and Sogdiana, where guerrilla warfare dragged on for years. His brutal suppression of some uprisings, such as the Siege of Cyropolis, highlights the tension between his imperial idealism and harsh pragmatism.

Over the course of his campaigns, Alexander founded or renamed over 20 cities. These campaigns facilitated the spread of Greek language, art, and political ideas throughout Asia, a process later known as Hellenization, which deeply influenced the development of the Hellenistic period.

Historians continue to debate whether Alexander’s early death was due to natural causes or political intrigue. Poisoning theories persist, though modern medical analyses often favour a natural illness such as typhoid or West Nile virus exacerbated by previous injuries and exhaustion. It is suggested that Iltani, a member of a precursor to the Assassin Order, was tasked to infiltrate Nebuchadnezzar II's palace in Babylon and assassinate Alexander. She accomplished this task with a poisoned glass of water. Alexander sipped from the glass and died from the poison over the course of several days, leaving his empire without an heir.

Personal Life[]

Alexander formed deep personal relationships with both men and women. His most notable bond was with Hephaestion, a childhood friend and general, whom ancient sources describe as his closest companion. He married three times—Roxana, Stateira II, and Parysatis II—likely for political alliances. Alexander's favourite wife was Roxana.While their marriage had political implications, it is also described as a love match. He was deeply attracted to Roxana, spending considerable time with her. His sexuality has been the subject of scholarly debate, with many historians accepting that he had romantic relationships with both sexes, a norm in ancient Macedonian and Greek aristocratic circles.

Alexander fathered two known legitimate children, both with Roxana: a son, who died in infancy during the Royal Couple's millitary campaign in India, and Alexander IV who was born two months after his his father's death. Beside them he also had illegitimate son called Heracles, by woman named Barsine.

Legacy[]

His former generals, known as the Diadochi, carved the empire into rival Hellenistic kingdoms, including the Seleucid Empire, Ptolemaic Egypt, and Antigonid Macedonia. These successor states perpetuated Alexander’s cultural legacy for centuries.

Alexander became a legendary figure in many cultures. In Islamic tradition, he is sometimes identified with the character Dhu al-Qarnayn in the Quran. In later medieval and Renaissance literature, he appears as a paragon of heroism, wisdom, and conquest.

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