Ma Su
In 228, when Zhuge Liang led Shu forces on the first of a series of campaigns against Shu's rival state, Cao Wei, he brought Xiang Lang along and left him in charge of the Shu base at Hanzhong Commandery. The Shu vanguard, led by Ma Su, suffered a devastating defeat at the Battle of Jieting against Wei forces led by Zhang He. Xiang Lang received news of Ma Su's defeat before Zhuge Liang did, but due to his friendship with Ma Su, he did not report it to Zhuge Liang. Later, after Zhuge Liang found out, he was so furious that he dismissed Xiang Lang and sent him back to Chengdu.