Siege of Kolomna

Siege of Kolomna
	Part of the Mongol invasion of Kievan Rus'
Date	December 1237–January 1238
Location	Kolomna, modern Moscow Oblast
Result	Mongol victory Vladimir and Moscow besieged afterward;
Belligerents
Mongol Empire	Vladimir-Suzdal
Commanders and leaders
Burundai Kulkan †	Prince Vsevolod Yuryevich Prince Vladimir Yuryevich Voivode Yeremey † Prince Roman Ingvarevich of Ryazan †
Strength
At least one tumen (10,000) of nomad cavalry	Several hundred cavalry, up to 15,000 militia on foot, some Ryazan survivors
Casualties and losses
Significant	Entire force

The siege of Kolomna during December 1237–January 1238 was part of the Mongol invasion of Kievan Rus'. Following the Battle of Voronezh River in December 1237, Yuri II of Vladimir sent both of his sons with "all his men"^[1] and Voivode Yeremey to defend the fortress of Kolomna, which was on the border to the Wild Fields.