Zhuge Zhan
Having seen his father adopt an aggressive foreign policy towards Shu's rival state Cao Wei in the form of six military campaigns between 228 and 234, Zhuge Zhan recognised the inherent dangers of overly using military force, especially for Shu since it was far weaker than Wei in terms of military and economic power. After Jiang Wei became the "de facto" overall commander of the Shu army, Zhuge Zhan attempted to dissuade him from continuing to wage war against Wei but to no avail – Jiang Wei launched a total of 11 military campaigns against Wei between 240 and 262. After Jiang Wei suffered a crushing defeat at the hands of Wei forces, Zhuge Zhan wrote to the Shu emperor Liu Shan, asking him to remove Jiang Wei from his military command and replace him with Yan Yu, a friend of the eunuch Huang Hao. Zhuge Zhan's memorial to Liu Shan was preserved and was still available by the time of the Jin dynasty. However, it is not known whether Liu Shan heeded Zhuge Zhan's advice, because Jiang Wei did not return to the Shu capital, Chengdu, after his failure in the last of the 11 campaigns, presumably because he knew that the people of Shu were increasingly resentful of him. Liu Shan also compromised Zhuge Zhan's proposal to switch from an offensive stance against Wei to a defensive one, because he had earlier replaced Wei Yan's tried-and-tested defensive layout with a high-risk-high-reward strategy by Jiang Wei.