Timur Defeats Ottomans

In 1402, the Central Asian conqueror Timur, known in the West as Tamerlane, defeated the Ottoman sultan Bayezid I at the Battle of Ankara and took him prisoner. The victory shattered the rising Ottoman state for a decade, delayed its conquest of Constantinople by about half a century, and showed how fragile even a powerful empire could be when it depended on a single ruler and an unstable army.

Bayezid, nicknamed "the Thunderbolt," had spent the 1390s expanding Ottoman power in the Balkans and Anatolia. He besieged Constantinople, defeated a Crusader army at Nicopolis in 1396, and absorbed several Turkish principalities in Anatolia. The rulers he displaced fled to Timur's court and appealed for help. Timur, who had built a vast empire from his base in Samarkand, already saw himself as the rightful overlord of the region, and the two rulers exchanged increasingly hostile letters. Their rivalry was sharpened by disputes over border territories and vassals.

Timur invaded Anatolia in 1402 and, according to most accounts, marched toward Ankara while Bayezid hurried to meet him. The battle was fought near the city in late July, though sources vary on details. Bayezid's army included Ottoman troops, Balkan Christian vassals such as the Serbs under Stefan Lazarević, and Anatolian Turkish contingents. Many of the Anatolian soldiers, who had recently been under the rule of the dispossessed principalities, are said to have defected to Timur during the fighting. Bayezid's forces were broken, and the sultan was captured. Later European tales of him being caged and humiliated are probably legend, and historians remain uncertain about the circumstances of his captivity. He died in custody in 1403.

The consequences were severe. Timur restored the Anatolian princes to their lands, and the Ottoman realm split as Bayezid's sons fought one another in a civil war known as the Ottoman Interregnum. Mehmed I eventually emerged victorious around 1413 and began rebuilding the state. For the Byzantine Empire, the defeat gave a welcome reprieve, as the siege of Constantinople was lifted.

Timur himself did not create a lasting order in Anatolia. He withdrew and died in 1405 while preparing a campaign against China, and his empire fragmented among his successors. The Ottomans, by contrast, recovered with remarkable speed, reuniting their lands and later conquering Constantinople under Mehmed II in 1453. The Battle of Ankara is therefore remembered less as the end of the Ottomans than as a dramatic interruption in their rise.