Khalakhaljid Sands was one of many battles which Genghis Khan

Genghis Khan

Genghis Khan , born Temujin and occasionally known by his temple name Taizu , was the founder and Great Khan of the Mongol Empire, which became the largest contiguous empire in history after his death....

 fought to try to unify the tribes of Mongolia

Mongolia

Mongolia is a landlocked country in East and Central Asia. It is bordered by Russia to the north and China to the south, east and west. Although Mongolia does not share a border with Kazakhstan, its western-most point is only from Kazakhstan's eastern tip. Ulan Bator, the capital and largest...

 under one banner. The battle was against Jamukha, who had risen against Genghis. Genghis lost this battle, and his son Ogedai

Ögedei Khan

Ögedei Khan, born Ögedei was the third son of Genghis Khan and second Great Khan of the Mongol Empire by succeeding his father...

 was missing and wounded on the battlefield. The Secret History of the Mongols

The Secret History of the Mongols

The Secret History of the Mongols is the oldest surviving Mongolian-language literary work...

states that Genghis's adopted brother and companion Borokhula

Borokhula

Borokhula was one of Genghis Khan's most loyal generals and one of his older friends and allies. He was found after the destruction of the Jurkin, one of the tribes of Mongolia, by Jebke, and given to Hoelun. He saved Genghis's son Ögedei Khan during the battle of Khalakhaljid Sands by sucking...

rescued Ogedai after the battle.