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How did Ottoman cannons help capture Constantinople in 1453?
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Ottoman Empire
Map showing the expansion of the Ottoman Empire from about 1300 to 1700. The empire reached its greatest extent between 1683 and 1699.
To capture Constantinople in 1453, Sultan Mehmed II utilized massive cannon to overcome the city's formidable, long-standing defenses.12
The Ottoman strategy relied on the following:
- Overwhelming Force: Mehmed II commissioned the Hungarian gunsmith Urban to build cannons powerful enough to demolish the city's ancient walls, which had remained unbreached for a millennium. These included large bombards, one of which weighed over 38,000 pounds.3245
- Constant Bombardment: The Ottomans deployed 69 cannons to maintain a relentless, daily barrage against the land walls. This artillery fire created several breaches in the fortifications, forcing the defenders to spend their nights desperately repairing the damage.2
- Strategic Integration: While the artillery battered the walls, Mehmed II used his fleet to blockade the city by sea, ensuring the defenders remained isolated and spread thin.12
Ultimately, the sustained artillery pressure weakened the city's structural defenses, creating the vulnerabilities that allowed Ottoman forces—including elite Janissaries—to eventually breach the walls and secure the city.2