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| Battle of Rusion | |||||||
|---|---|---|---|---|---|---|---|
| Part of Bulgarian–Latin wars | |||||||
 Bulgaria under Kaloyan | |||||||
| |||||||
| Belligerents | |||||||
| Bulgarian Empire | Latin Empire | ||||||
| Commanders and leaders | |||||||
| Kaloyan |
Thierry de Termonde † Guillaume de Loos † Thierry de Loos † | ||||||
| Strength | |||||||
| 7,000 | Unknown | ||||||
| Casualties and losses | |||||||
| Unknown | Heavy, 120 knights and thousands of soldiers | ||||||
The battle of Rusion (Bulgarian: Битката при Русион) occurred in the winter of 1206 near the fortress of Rusion (Rusköy contemporary Keşan) between the armies of the Bulgarian Empire and the Latin Empire of Byzantium. The Bulgarians scored a major victory.