Battle of Nanpi

The Battle of Nanpi happened in the first month of 205, during the period known as the end of the Han dynasty. The battle spelled the annihilation of Yuan Tan, one of Yuan Shao's sons vying to succeed their father, by their common enemy Cao Cao, one of the serving Three Ducal Ministers. Having already dealt a major blow to another son Yuan Shang, Cao Cao's victory at Nanpi gave him uncontested control of the North China Plain, while the remnant Yuan power blocs were chased further north. Provided by Wikipedia