How Alexander the Great turned a sea into a road to conquer Tyre
In short: When the Phoenician city-state of Tyre refused Alexander the Great's request to sacrifice to Heracles, they inadvertently declared war. Facing an island fortress with massive walls and a powerful navy, Alexander chose a radical solution: building a massive land bridge across the sea.
In 332 BCE, Alexander the Great faced a strategic crisis in Phoenicia. Following his triumph against Darius III during the November 333 BCE Battle of Issus, his forces—roughly 35,000 to 40,000 men—traversed the area. While cities like Byblus and Sidon capitulated, Tyre presented a unique challenge. The city was located roughly 0.8 km offshore, making it an island fortress. Its defenses were legendary; according to the historian Arrian, the landward walls may have towered as high as 150 ft (46m), though historians debate this specific height.
The conflict began under a thin veil of religious diplomacy. Alexander requested permission to sacrifice to Heracles, the Greek equivalent of the Tyrian god Melqart. The Tyrians, sensing a Macedonian ploy to occupy their territory, refused, offering instead that he perform the rites in 'old Tyre' on the mainland. This refusal was effectively a declaration of war. The stakes were high for Alexander; he needed to secure all Phoenician cities to protect his rear before advancing toward Egypt, especially since Tyre served as a stronghold for the Persian fleet.
The siege, which began in January 332 BCE, saw the Tyrians prepare for a long conflict by evacuating women and children to their colony at Carthage. The city itself was left with approximately 40,000 people. To overcome the island's natural defenses, Alexander's engineers began a massive construction project: a causeway, or mole, built from rubble, timber, and stone taken from the ruins of old Tyre. This engineering feat aimed to bridge the gap between the mainland and the formidable island walls, fundamentally altering the geography of the battlefield.
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- Summary by Intellect · source: Alexander the Great and the Siege of Tyre
- Also: Alexander
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