Huang Wei
In 1938, General Guan was promoted to command the 33rd army, and was promoted to the position of commander-in-chief of 15th army group, becoming the first graduate of the Whampoa Military Academy to command an army group. In 1940, Guan led his unit into Yunnan province, and was put in charge of defend the border between China and Vietnam. However, Guan's relation with General Chen Cheng suffered another setback when he decided to remove Chen Cheng's favorite commander General Huang Wei as commander of the 54th corps because of Huang's alleged corruption. In 1944, General Guan received another promotion as deputy commander-in-chief of the 1st Area Army and was one of the most successful Chinese commanders in the entire war.