Subedei was Chingis Khan's incomparably most brilliant general. He has great and highly disciplined intelligence. It was during Chingis Khan's war in 1219-1222 against the Khwarezmian empire that Subedei was brought to the attention of the world at large. He was the mastermind and real leader behind the illustrious European campaign of 1236-1242, laid waste the whole of Eastern Europe in the course of this theatre of operations.