Legnica became renowned for the fierce battle that took place at Legnickie Pole near the city on 9 April 1241 during the first Mongol invasion of Poland. The Christian coalition under the command of the Polish Duke Henry II the Pious, supported by nobles, knights, and mercenaries, was decisively defeated by the Mongols. This, however, was a turning point in the war as the Mongols, having killed Henry II, halted their advance into Europe and retreated to Hungary through Moravia.