1453
Fall of Constantinople
The setting
Constantinople (in present-day Istanbul, Turkey)
A fortified peninsula protected on the landward side by the Theodosian Walls and on the seaward sides by water; the Golden Horn harbor was guarded by a defensive chain.
Reveal the outcome
Recorded sideOttoman Empire (Mehmed II)
Recorded resultdecisive victory
Ottoman victory; the city fell after a 53-day siege and Emperor Constantine XI died in the final assault.
How the atlas explains it
Overwhelming numbers and, decisively, gunpowder siege artillery. The Theodosian Walls had repelled attackers for a thousand years, but sustained bombardment by massive cannon created practicable breaches that a tiny garrison could not hold along the full perimeter. Naval moves into the Golden Horn stretched the defenders further.
What followed
Ended the Byzantine (Eastern Roman) Empire after more than a millennium, made Constantinople the Ottoman capital, and is often cited as a symbolic marker of the end of the Middle Ages and the rise of gunpowder over medieval fortification.