

At that time, Cao Cao's family members were in Juancheng (鄄城), so Xiahou Dun led a lightly-armed force towards Juancheng to fetch them. While Cao Cao was away in Xu Province, his subordinates Zhang Miao and Chen Gong rebelled in Yan Province and defected to another warlord Lü Bu. Xiahou Dun was left behind to defend Puyang, a major city in Yan Province. In 193, Cao Cao left his base in Yan Province (兗州 covering parts of present-day southwestern Shandong and eastern Henan) on a campaign against Tao Qian, the Governor of Xu Province, whom he held responsible for the murder of his father Cao Song. He was later promoted to "Colonel Who Breaks and Charges" (折衝校尉) and was appointed as the Administrator (太守) of Dong (東郡).

When Cao Cao was appointed as acting-"General of Uplifting Martial Might" (奮武將軍) by the Han imperial court, Xiahou Dun was commissioned as a Major (司馬) and was ordered to garrison at Boma (白馬). In 190, when Cao Cao was raising an army to participate in the campaign against Dong Zhuo, Xiahou Dun became a subordinate officer under Cao and fought in many battles. At the age of 13, he killed a man who insulted his teacher, and had been known for his fiery personality since then.

He was a descendant of Xiahou Ying, who served under the Han Dynasty's founder Liu Bang ( Emperor Gao). Xiahou Dun was a native of Qiao (譙) in the Pei state (沛國), which is in present-day Bozhou, Anhui.
