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Mongol invasion of Europe: Legnica and Mohi
1236–1242; Legnica April 9 and Mohi April 11, 1241· War· Europe
Well documentedSolid records, physical evidence or scientific consensus.
Mongol armies conquered the Rus principalities, then crushed Polish and Hungarian armies at Legnica and Mohi in April 1241.
See it on the Battles & Wars map →What happened
Led in name by Batu, a grandson of Genghis Khan, and planned by Subutai, Mongol armies conquered the Rus principalities in 1237–1240 and sacked Kiev. In 1241 they struck in two prongs. A northern force crushed Duke Henry II of Silesia's Polish and German army at Legnica on April 9. Two days later the main army trapped King Béla IV's Hungarians in their wagon camp at Mohi and destroyed them. Hungary was devastated, but in 1242 the Mongols withdrew.
Why it matters
Central Europe was spared conquest, but the Rus lands paid tribute to the Golden Horde for about 240 years. Hungary rebuilt with stone castles, which helped it resist later raids.
How we know
Rus and Polish chronicles, including Jan Długosz writing two centuries later; the eyewitness 'Sorrowful Lament' of Roger, a canon captured in Hungary; papal letters; Persian histories; and excavated burned villages in Hungary.
Still debated
Why they withdrew is debated: news of Great Khan Ögedei's death, succession politics, losses, or a wet spring that turned Hungary's plains to marsh, as tree-ring studies suggest.
Inside this (1)
Connections (4)
▸Subutai planned and led Mongol invasion of Europe: Legnica and MohiWell documented
The connection
Batu held formal command, but Subutai, the veteran of Kalka, is credited with planning the 1236–1242 campaign: striking Volga Bulgaria and the Rus principalities in winter, when frozen rivers served as roads, then sending separate forces into Poland and Hungary that coordinated across hundreds of kilometers.
When and how
Volga region, Rus, Poland and Hungary, 1236–1242; Subutai fought beside Batu at Mohi on the Sajó River, April 1241.
How we know
The Yuan History's biography of Subutai, and Persian and European chronicles, describe his role, including at Mohi.
Debates and open questions
Modern writers may overrate Subutai as a master strategist; sources record quarrels with Batu, and how centrally planned the campaign was is debated.
▸Battle of the Kalka River came during a scouting raid ahead of Mongol invasion of Europe: Legnica and MohiMostly agreed
The connection
Kalka came during Jebe and Subutai's long reconnaissance in force west of the Caspian. It showed the Mongols the Rus princes' disunity and the steppe routes west. Thirteen years later Subutai returned with Batu's much larger army, and the Rus lands fell within four years.
When and how
Kalka River, 1223; return campaign 1236–1240, ending with the fall of Kiev in December 1240.
How sure are we?
Rus chronicles record both the 1223 defeat and the 1237 return, and Subutai's presence on both campaigns is documented.
Debates and open questions
Whether the 1220–1223 raid was planned as scouting for a future conquest or was simply a pursuit and plunder raid is debated.
▸Mongol invasion of Europe: Legnica and Mohi marked the westernmost reach of Mongol conquestsWell documented
The connection
The 1241 campaigns took Mongol armies into Poland, Hungary, Croatia and the edge of Austria. This was the farthest west any Mongol army reached. In 1242 they withdrew to the Volga steppe, and later raids on Poland and Hungary never matched it.
When and how
Poland, Hungary and the Adriatic coast, 1241–1242; Batu then founded the Golden Horde, based at Sarai on the lower Volga.
How we know
European chronicles and letters record Mongol forces near Vienna and on the Dalmatian coast in 1241–1242.
Debates and open questions
Whether the Mongols could have conquered western Europe, with its castles, forests and limited pasture for horses, is a long-running debate.
▸Mongol invasion of Europe: Legnica and Mohi routed armored knights, exposing the limits of Stirrup and heavy cavalry (knights)Mostly agreed
The connection
At Legnica, Polish and German knights, possibly including some from the military orders, charged Mongol troops who fell back, then were shot down by horse archers. At Mohi, Hungarian knights were trapped in their own wagon camp. Heavy charges failed against an enemy that would not stand to receive them.
When and how
Legnica, Silesia, April 9, 1241, and Mohi on the Sajó River, Hungary, April 11, 1241.
How sure are we?
Chronicles, letters to the pope and Emperor Frederick II, and Roger's eyewitness account of Hungary describe the defeats.
Debates and open questions
Details of Legnica come mostly from Długosz, writing 200 years later, and are doubted. Poor Hungarian leadership, not knighthood itself, may explain Mohi.