Battle of the Indus (Mongol Invasion)

The Battle of the Indus was the final stand of Jalal al-Din Mangburni, the last Khwarazmian sultan, against the Mongol horde of Genghis Khan. The Mongol invasion of Khwarezm (1219-1221) had been triggered by the killing of Mongol merchants and ambassadors by the Khwarazmian Shah — an act that unleashed one of the most devastating military campaigns in history. City after city was razed: Samarkand, Bukhara, Merv, Nishapur — all centres of Islamic civilisation were destroyed with enormous civilian casualties. Jalal al-Din gathered a remnant force and actually defeated a Mongol force at Parwan, but was then personally pursued by Genghis Khan to the banks of the Indus. Surrounded, Jalal al-Din's army fought heroically but was overwhelmed. With the Mongols closing in from three sides, Jalal al-Din spurred his horse off a cliff into the river and swam to safety in India — an act Genghis Khan reportedly watched with admiration. The Khwarazmian state ceased to exist.