Li Guang
In 129 BC, Xiongnu attacked the Shanggu Commandery (上谷郡, roughly modern-day Zhangjiakou, Hebei). Emperor Wu promoted Wei Qing as the General of Chariots and Cavalry (車騎將軍) and dispatched him with Gongsun Ao, Gongsun He (公孫賀), and Li Guang in four separate columns against Xiongnu, each leading 10,000 cavalry. Li Guang (the most seasoned commander out of the four) and Gongsun Ao suffered major losses at the Xiongnus' hand, while Gongsun He failed to encounter and engage any enemy. Wei Qing, the least experienced out of the four, distinguished himself with a successful long-distance raid of the Xiongnu's holy site Longcheng (龍城), killing over 700 Xiongnu soldiers in the process. As a reward for the victory (the first proper victory against Xiongnu in Han history), Wei Qing was promoted to a higher command and created an acting Marquess of Guannei (關內侯), with a march of several hundred households.