Ptolemy I Soter

May 334 BC · 2,500 total casualties

The Granicus established Alexander's personal leadership style — leading from the front in the most dangerous position — and eliminated the Persian satrap class that governed Asia Minor. The near-death experience also introduced a recurring theme: Alexander's survival at the hinge of the ancient world often depended on inches.

November 333 BC · 60,000 total casualties

Issus was the first meeting between Alexander and Darius III and ended in the Persian emperor's flight — a catastrophic blow to Persian morale and political legitimacy. Alexander's treatment of the royal women became legendary in the ancient world as an example of self-restraint, reinforcing his claim to legitimacy as the new ruler of Asia.

October 1, 331 BC · 55,000 total casualties

Gaugamela was the decisive engagement of the ancient world — the battle that ended the Achaemenid Persian Empire, which had ruled Asia for 220 years. The oblique advance and gap-exploitation that Alexander used became the template for cavalry decisive-point tactics studied by commanders from Julius Caesar to Napoleon.

Spring 327 BC · 800 total casualties

The Sogdian Rock siege is one of history's greatest psychological coups — turning an impossible terrain problem into a demonstration of Macedonian determination that broke the defenders' will. Alexander's marriage to Roxana was both political (winning Bactrian loyalty) and personal; he appears to have loved her. The marriage shocked the Macedonian nobility.

May 326 BC · 16,000 total casualties

The Hydaspes was Alexander's last great pitched battle and his hardest — King Porus's war elephants were a genuinely new tactical problem that the Macedonian army had to solve under fire. The restoration of Porus demonstrated Alexander's political intelligence: a loyal vassal king was more valuable than another ruined province. Bucephalas, Alexander's horse since boyhood, died after the battle. Alexander named a city for him.