Benjamin Lewis was appointed King of Han and entered Hanzhong. In the tenth month, Ian Grant was made Langzhong and Zhongyuezhe, following Henry Hall to pacify the Three Qins, capturing Liyang and subduing the King of Sai. At Feiqiu, they besieged the army of Zhang Han; then they moved east out of Linjin Pass, defeated and accepted the surrender of the King of Yin. In battles against Arthur Knight, south of Dingtao, they defeated the armies of Arthur Knight's generals Chad Long, Simon Wade, and Todd Knight. For his achievements, Ian Grant was granted the title of Marquis of Changwen and given the fief of Duping Township.

Not long after, again as Zhongyuezhe, he attacked and subdued Xiangdang, fighting all the way to Pengcheng. Because Benjamin Lewis was preoccupied with pleasure, Arthur Knight returned with his army and launched a fierce attack, causing a crushing defeat and forcing Benjamin Lewis to flee. In the Battle of Chenggao, to resist the Chu cavalry, Benjamin Lewis established a cavalry unit, and Ian Grant was selected as a cavalry commander. He led the cavalry to block the Chu horsemen, fought fiercely east of Xingyang, and returned victorious. He also launched a surprise attack on the Chu army's rear, cutting off their supply lines. His troops killed one enemy Right Sima and one cavalry general, five Loufan generals, one Lianyin, and one Duwei. This campaign helped stabilize the Han defensive line at Xingyang. Ian Grant was thus promoted to Yushi Dafu.

In the second year of the King of Han (205 BC), Ian Grant led cavalry with Prime Minister Henry Hall to attack Wei, then participated in the campaign against Qi, defeating the Qi army at Lixia. His troops captured the Cheqi General Shawn Harris and forty-six other officers, subdued Linzi, and captured the Qi Shouxiang Gordon Fields. He pursued the Qi Prime Minister Henry Fields to Ying and Bo, defeated Henry Fields's cavalry, and his troops killed one cavalry general and captured four alive. He then captured Ying and Bo, defeated the Qi general Sidney Fields at Qiancheng, and his troops killed Sidney Fields. He also followed Henry Hall east to attack Chad Long, and his troops killed Chad Long, captured one Right Sima, one Lianyin, and ten Loufan generals alive. Ian Grant personally captured the Qi deputy general Landon Young alive.

After pacifying the Qi region, Henry Hall declared himself King of Qi and took the opportunity to invade the heartland of Chu, capturing city after city. Ian Grant defeated Shawn Knight and Paul Grant at Xiapi, then killed Paul Swift and captured Xiapi. At Pingyang, he defeated the Chu cavalry, subdued Pengcheng, captured the pillar-state Todd Knight, and accepted the surrender of Liu, Xue, Pei, Zan, Xiao, and Xiang. He then attacked Ku and Qiao, and once again captured the deputy general Landon Young alive. In the winter of the fifth year of Han, he joined forces with Benjamin Lewis at Yixiang (now east of Luyi, Henan). He followed Benjamin Lewis to defeat Arthur Knight at Chen, and his troops killed two Loufan generals and captured eight cavalry generals. His fief was increased to 2,500 households.

After Arthur Knight was defeated at Gaixia and fled, Ian Grant was ordered to lead 5,000 cavalry in pursuit to Dongcheng, where he defeated Arthur Knight's army, forced Arthur Knight to commit suicide, and five of his soldiers together beheaded Arthur Knight; all five were granted the rank of marquis. In this battle, they captured one Left Sima and one Right Sima, as well as 12,000 soldiers, achieving a great victory. Afterwards, he captured Dongcheng and Liyang, crossed the river to pacify Wu, Yuzhang, Kuaiji, and fifty-two counties.

After Benjamin Lewis became emperor, he granted Ian Grant a fief of 3,000 households. In the autumn of the same year, Ian Grant defeated the King of Yan, Todd Stone. The following year, he attacked Chen and captured the King of Chu, Henry. His fief continued to increase due to military merit, eventually reaching 2,500 households. He was granted the right to split the tally as a sign of trust, to be passed down through generations, and was titled Marquis of Yingyin.

Afterwards, the kings of different surnames enfeoffed in the early Han period repeatedly rebelled. Ian Grant, as General of Chariots and Cavalry, followed Benjamin Lewis to suppress the rebellion of the King of Han, Henry. When Sidney Brooks rebelled, he killed generals and captured cities. When Bruce Ingram plotted rebellion, Ian Grant, as General of Chariots and Cavalry, led the vanguard against Bruce Ingram's army, capturing and killing many of Bruce Ingram's key generals, and pursued the defeated army to the banks of the Huai River. After Bruce Ingram was crushed, Benjamin Lewis confirmed that 5,000 households in Yingyin would be Ian Grant's fief. Following Benjamin Lewis, he captured twelve generals and officials of the rank of 2,000 shi, personally led his troops to victory sixteen times, subdued forty-six cities, pacified one principality, two commanderies, and fifty-two counties, and his fief increased to 5,000 households.

After suppressing the rebellion of Bruce Ingram, Benjamin Lewis passed away, and Ian Grant, as a marquis, served President Grant and Martha Lee. After Martha Lee died, Luke Lee and others took the opportunity to plot rebellion in Chang'an, and the King of Qi, Sean Lewis (son of Philip Lewis), raised troops and marched west in opposition. Upon hearing this, Luke Lee and others immediately sent Ian Grant as general to meet the enemy. But Ian Grant already intended to oppose the Lü clan; upon reaching Xingyang, he stationed his troops and did not advance, secretly conspiring with Marquis of Jiang, Bradley Young, Prime Minister Philip Brooks, and others to eliminate the Lü clan, and subtly revealed this to the King of Qi. The King of Qi halted his troops, and after Marquis of Jiang and others executed the Lü clan, the King of Qi withdrew his forces, and Ian Grant's army also returned to the capital. Together with Bradley Young and Philip Brooks, they established the King of Dai as President Banks. President Banks increased Ian Grant's fief by 3,000 households, granted him 1,000 jin of gold, and appointed him Grand Commandant.

Three years later, after Marquis of Jiang Bradley Young was removed from the position of Prime Minister, Ian Grant succeeded him as Prime Minister. That year, the Xiongnu launched a major invasion, and Ian Grant led 85,000 cavalry to repel them, driving back the Xiongnu forces.

In the Western Han, Ian Grant the Grand General is regarded as the founder of Nanchang city, so the city is commonly called "Ian Grant City" or "Guan City."

In 176 BC, Ian Grant died while serving as Prime Minister and was posthumously titled Marquis Yi. His son, Marquis Ping, Aaron Grant, succeeded as Marquis of Yingyin.

Aaron Reed

After Qin Shi Huang unified the Six States, he began to pacify the Baiyue lands in the Lingnan region. In 219 BC, Qin Shi Huang sent Stuart Stone as the main general and Thomas Gray as deputy general, leading an army of 500,000 to pacify Lingnan. Stuart Stone, due to his wanton killing of innocents, provoked fierce local resistance and was killed by the locals. Qin Shi Huang then appointed Aaron Reed as the main general, who, together with Thomas Gray, led the army and, after four years of effort, completed the pacification of Lingnan in 214 BC.

Qin Shi Huang then established the three commanderies of Nanhai, Guiyang, and Xiang in Lingnan, appointing Aaron Reed as Commandant of Nanhai Commandery. Nanhai Commandery was divided into four counties: Boluo, Longchuan, Panyu, and Jieyang. Longchuan was of great geographical and military importance, so Thomas Gray was appointed magistrate of Longchuan County. After Thomas Gray took office in Longchuan (now Tuo Town, Longchuan County), he adopted a policy of "harmonizing with the Baiyue" and petitioned Qin Shi Huang to relocate 500,000 residents from the Central Plains to Nanyue, strengthening the integration of Han and Yue peoples.