What was the name of the battle where the Mongols defeated the Hungarian army in 1241?

The Mongols defeated the Hungarian army at the Battle of Mohi on April 11, 1241. Also called the Battle of Muhi, it took place near the Sajó River during the Mongol invasion of Europe and was one of the most devastating defeats in medieval Hungarian history.

The Mongol army was led by Batu Khan, with Subutai playing a major operational role. King Béla IV's Hungarian forces camped in a fortified wagon encampment near the river. The Mongols first engaged the Hungarian defenders at a bridge, then used additional crossings and coordinated attacks to strike the camp from multiple directions.

Mongol mobility, disciplined horse archers, deception, and siege equipment overwhelmed the Hungarian army. Contemporary reports describe extremely heavy Hungarian losses, while the exact Mongol casualties remain uncertain. Béla IV escaped, but much of the kingdom was left exposed, and the invasion caused widespread destruction.

The battle is often confused with Legnica, where another Mongol force defeated a Polish-led army two days earlier. Mohi specifically refers to the Mongol victory over Béla IV's Hungarian army near the Sajó River.