| Battle of Kosmidion | |||||||
|---|---|---|---|---|---|---|---|
| Part of the Ottoman Interregnum | |||||||
| |||||||
| Belligerents | |||||||
| Forces of Süleyman Çelebi and Vuk Lazarević | Forces of Musa Çelebi and Stefan Lazarević | ||||||
| Commanders and leaders | |||||||
|
Süleyman Çelebi Vuk Lazarević |
Musa Çelebi Stefan Lazarević | ||||||
| Strength | |||||||
| Unknown | Unknown | ||||||
| Casualties and losses | |||||||
| Heavy | Heavy | ||||||
The Battle of Kosmidion (Turkish: Eyüp Muharebesi) occurred on 15 June 1410, during the Ottoman Interregnum, and was fought between the forces of the rival brothers, Musa Çelebi and Süleyman Çelebi, at Kosmidion (modern Eyüp) just outside the land walls of Constantinople.