Zhou Yu (Wade-Giles: Chou Yu; 175–210) was a military general and strategist who served his close friend, the warlord Sun Ce, during the late Han Dynasty period of Chinese history. After the death of Sun Ce, another prominent warlord, Cao Cao, led a massive force southward with the intention to conquer the Jiangdong region, Zhou Yu was assigned by Sun Ce's brother and successor, Sun Quan, to be the naval commander for the defensive forces and he defeated Cao Cao's forces at the decisive Battle of Red Cliffs in 208. The subsequent Battle of Jiangling, which had Lieutenant General (偏將軍) Zhou Yu serving as the commander-in-chief of Sun Quan's forces, solidified the survivability of the future Eastern Wu regime. Thus, Zhou Yu was praised by Sun Quan to be the sole person who enabled him to become an emperor years after Zhou's death.
Read more about Zhou Yu: Family, Appraisal, In Fiction and Popular Culture, Modern References