The Mongols Destroy the Hungarian Army at Mohi

In the spring of 1241, the Mongol Empire directed its armies into Central Europe, executing coordinated operations across Poland, Transylvania, and Hungary. Under the authority of Batu Khan and the veteran commander Subutai, the main invasion force breached the fortified Verecke Pass in March. Their advance challenged the Kingdom of Hungary, led by King Béla IV, whose defense was severely undermined by political discord. Béla had spent years reclaiming crown estates and restricting noble privileges, alienating the aristocracy whose military contingents were essential to the kingdom. Additional hostility flared over thousands of Cuman nomads who had sought refuge in Hungary from the Mongols, resulting in riots, the murder of the Cuman khan, and the departure of their experienced fighters just as the invasion peaked.

Béla mustered his available forces at Pest before following the retreating Mongol vanguard eastward. In early April, the Hungarian army encamped on the southwest bank of the flooded Sajó River near the settlement of Mohi. Lacking adequate reconnaissance of the dense woods opposite them, the Hungarians remained largely ignorant of the full Mongol host. Béla fortified his position by forming a tight enclosure of wagons, relying on a traditional defense against mounted archers. Warned by an escaped Ruthenian captive that an assault across the wooden bridge was imminent, a vanguard led by the king's brother Coloman, Duke of Slavonia, and, according to Hungarian accounts, Archbishop Ugrin Csák rushed to the span around midnight. There, supported by crossbowmen, they drove back Batu's forward detachment with heavy losses.