Battle of Guandu

Battle of Guandu
Part of the wars at the end of the Han dynasty
A map of the battle. It shows the movements during the battles of Boma and Yan Ford. Flanking attempts are not shown. Note that the Yellow River has changed course over the centuries and the places depicted are no longer at the same locations relative to the river.
Date September–November 200 Location Northeast of present-day Zhongmu County, Henan Result Victory for Cao Cao
Belligerents
Cao Cao	Yuan Shao
Commanders and leaders
Cao Cao Cao Hong Guo Jia Xun Yu Cheng Yu Xun You Guan Yu Zhang Liao Xu Chu Yue Jin Xu Huang Yu Jin Xiahou Yuan	Yuan Shao Chunyu Qiong  Guo Tu Tian Feng  Ju Shou  Shen Pei Yan Liang † Wen Chou † Zhang He  Yuan Tan Liu Bei
Strength
About 40,000	~110,000
Casualties and losses
~8,000	~80,000

The Battle of Guandu was fought between the warlords Cao Cao and Yuan Shao in 200 AD in the late Eastern Han dynasty. Cao Cao's decisive victory against Yuan Shao's numerically superior forces marked the turning point in their war. The victory was also the point at which Cao Cao became the dominant power in northern China, leading to the establishment of the state of Cao Wei in the Three Kingdoms period.