In 1944, he earned a Diplome D'Etudes Primaires Superieures Indochinoise (DEPSI), from Lycee Khai Dinh, located in Huế.
Military career
He served as Company commander, 1951 in the Vietnamese National Army then as Deputy Battalion commander, 1952; Regimental Chief of Staff, 1954; Division Chief of Staff, 1955.
By the end of 1965 the US advisers to the 10th Division regarded Lan as "moody and vacillatory" and "a marginal commander who would have to be worked with." They gave Lan high marks for his "perceptiveness and dexterity in civil affairs and troop morale" but saw his interest in local politics as too distracting. Although they found his three regimental commanders "capable and willing people," they felt that it was too early to judge if the Division was going to jell into a fighting unit. COMUSMACV General William Westmoreland predicted that combined operations with the US 1st Infantry Division and the 173rd Airborne Brigade would inspire the Division to higher standards.[1]: 115–6
From September 1966 he served as the deputy chief of staff for training and director of the Central Training Command.[1]: 309
In March 1968 he succeeded Nguyễn Phước Vĩnh Lộc as II Corps commander, he was not necessarily regarded as an improvement by MACV. As commander of the 25th, 23rd and 18th Divisions between 1962 and 1966, he had received poor ratings from almost all of his American advisers, he was, however, an ardent supported of PresidentNguyễn Văn Thiệu and could be expected to follow the dictates of the Saigon government more closely than his predecessor.[1]: 309
In August 1970, Thiệu replaced Lan as II Corps commander with General Ngô Du.[1]: 364 Lan became inspector general of the armed forces and later commandant of the National Defense College.[1]: 367
Later life and death
Lữ died in Virginia on 28 May 2021, at the age of 93.[2]