There is no settled answer, and historians have argued it for two centuries. Alexander the Great never lost a major battle and carved out one of the largest empires of the ancient world before he was thirty-three; Napoleon dominated Europe and reshaped the art of war, only to be undone in the end by Russia and the coalitions ranged against him. Here they are, side by side.
Head to head
| Napoleon | Alexander the Great | |
|---|---|---|
| Lived | 1769 to 18211 | 356 to 323 BC2 |
| Role | Emperor of the French and general | King of Macedon and conqueror |
| Greatest victory | Austerlitz, 1805 | Gaugamela, 331 BC |
| At its height | Master of most of Europe | From Greece to the edge of India |
| Battle record | Won most of his battles, then lost at the end | Never lost a major battle |
| Undoing | The invasion of Russia in 1812 and the coalitions | Died at 32; his empire split among his generals |
| Lasting legacy | The Napoleonic Code and modern warfare | The Hellenistic age and the model of the conqueror |
Alexander: the undefeated conqueror
Alexander the Great inherited a superb army from his father Philip3 and, in barely a decade, destroyed the Persian Empire and marched to India4. His victory at Gaugamela in 331 BC is one of the most famous in history, and he never lost a pitched battle4. His weakness was what came after: he died at thirty-two with no settled succession2, and his empire was torn apart by his generals2.
Napoleon: the master of Europe
Napoleon rose from the chaos of the French Revolution to dominate a continent, winning masterpieces like Austerlitz in 1805 and reshaping law, the state and the art of war. He fought far more battles than Alexander and against coalition after coalition. But the invasion of Russia in 1812 broke his army1, and defeat at Waterloo in 1815 ended him for good.
The verdict
The case for Alexander is his flawless record and the sheer daring of his conquest, achieved impossibly young. The case for Napoleon is scale and depth: more battles, tougher enemies, and a legacy of institutions that outlived him. Alexander was arguably the greater conqueror; Napoleon the greater statesman-general. Where you land often depends on whether you prize an unbeaten record or the weight of what a commander leaves behind.
Compare more in Alexander vs Caesar and Napoleon vs Wellington, or meet the field in the greatest military commanders.
Sources
Each commander above has a full biography on this site, with its own sources. Judgements of who was "greater" are ours and openly a matter of debate; the facts and dates follow established histories. See our editorial approach.