When the Ottoman Empire nearly collapsed, four brothers fought for the throne
Following the capture of Sultan Bayezid I in 1402, the Ottoman realm fractured into a decade of fratricidal chaos. Four sons claimed the mantle of leadership, turning the empire into a battlefield of shifting alliances and brutal executions that nearly erased the state before Mehmed I finally restored order.
The Ottoman Interregnum began after the crushing defeat of Sultan Bayezid I by Timur at the Battle of Ankara in July 1402. Although Timur initially favored Mehmed Çelebi, the sultan's other sons—Süleyman, İsa, and later Musa—refused to yield. This power vacuum triggered a brutal civil war that lasted nearly eleven years, fundamentally testing the resilience of the young Ottoman state.
The conflict was defined by rapid territorial shifts and tactical betrayals. Süleyman established a power base in Edirne, controlling Thrace and parts of Greece, while İsa and Mehmed fought for dominance in Anatolia. After İsa was eliminated, the struggle evolved into a complex three-way rivalry. Musa, once a prisoner of Timur, was released at Mehmed's request, only to become a formidable challenger in Europe. The war saw constant maneuvering, including a desperate siege of Constantinople where the Byzantine emperor Manuel II Palaiologos was forced to pivot his support between the warring brothers to survive.
The resolution came in July 1413 at the Battle of Çamurlu. During the fighting, an attempt by Mehmed’s Janissary commander to sway the enemy ranks led to a dramatic confrontation, but Mehmed ultimately secured victory. With Musa dead, Mehmed emerged as the sole heir to Bayezid I. This period of instability served as a grim precursor to the systematic fratricide that would later characterize Ottoman successions, ensuring that only one ruler could hold the throne.
The legitimacy of these claimants was even reflected in their currency. During the conflict, only Mehmed minted coins identifying himself as Sultan, while his brothers used more modest titles. By the time Mehmed I was crowned in 1413, the empire had been pushed to the brink, yet the resolution of the Interregnum allowed for the eventual consolidation of power that would define the Ottoman trajectory for centuries to come.
Source: Ottoman Interregnum
