Battle of Guandu
In 200, when the forces of Cao Cao and Yuan Shao clashed at the Battle of Guandu, Li Dian, along with his clansmen and subordinates, took charge of supplying Cao's forces at the frontline with food and equipment. After Yuan Shao was defeated, Cao Cao appointed Li Dian as a Major-General () and ordered him to garrison at Anmin ().