Surprised by Rudolph's maneuver, Ottokar quickly abandoned the siege at Laa, marched southwards, and on August 26 met the united German and Hungarian forces near Dürnkrut.
When he arrived his enemies had already taken the opportunity to explore the topography of the future battleground.
From the early morning, the left wing of the advancing Bohemian troops were embroiled in impetuous attacks by the Cuman forces, which the heavily armed knights could not ward off.
Nevertheless, as the main armies collided and the battle wore on, Ottokar's outnumbering cavalry seemed to gain the upper hand, when even Rudolph's horse was stabbed under him and the 60-year-old narrowly escaped with his life, rescued by his liensmen.

After three hours of continued fighting on a hot summer day, Ottokar's knights in their heavy armour were exhausted, many of them suffered from circulatory failure and were not able to move.
At noon Rudolph ordered a fresh heavy cavalry regiment he had concealed behind nearby hills and woods to attack the right flank of Ottokar's troops.
Such ambushes were indeed commonly regarded as dishonourable in warfare and Rudolph's commander Ulrich von Kapellen apologized to his own men in advance.
Nevertheless, the attack prevailed in splitting and stampeding the Bohemian troops.
Ottokar realized the surprise attack and tried to lead a remaining reserve contingent in the rear of von Kapellen's troops, a maneuver that was misinterpreted as a rout by the Bohemian forces.
The following collapse resulted in a complete victory of Rudolph and his allies.
Ottokar's camp was plundered, and he himself was found slain on the battlefield.
Surprised by Rudolph's maneuver, Ottokar quickly abandoned the siege at Laa, marched southwards, and on August 26 met the united German and Hungarian forces near Dürnkrut. When he arrived his enemies had already taken the opportunity to explore the topography of the future battleground. From the early morning, the left wing of the advancing Bohemian troops were embroiled in impetuous attacks by the Cuman forces, which the heavily armed knights could not ward off. Nevertheless, as the main armies collided and the battle wore on, Ottokar's outnumbering cavalry seemed to gain the upper hand, when even Rudolph's horse was stabbed under him and the 60-year-old narrowly escaped with his life, rescued by his liensmen.
After three hours of continued fighting on a hot summer day, Ottokar's knights in their heavy armour were exhausted, many of them suffered from circulatory failure and were not able to move. At noon Rudolph ordered a fresh heavy cavalry regiment he had concealed behind nearby hills and woods to attack the right flank of Ottokar's troops. Such ambushes were indeed commonly regarded as dishonourable in warfare and Rudolph's commander Ulrich von Kapellen apologized to his own men in advance. Nevertheless, the attack prevailed in splitting and stampeding the Bohemian troops. Ottokar realized the surprise attack and tried to lead a remaining reserve contingent in the rear of von Kapellen's troops, a maneuver that was misinterpreted as a rout by the Bohemian forces. The following collapse resulted in a complete victory of Rudolph and his allies. Ottokar's camp was plundered, and he himself was found slain on the battlefield.
Battle on the Marchfeld