In this Vietnamese name, the surname is Lê, but is often simplified to Le in English-language text. In accordance with Vietnamese custom, this person should be referred to by the given name, Khang.
In early November 1960 Khang was commanding operations of the 1st and 2nd Marine Battalions in the Mekong Delta when he learned of the coup against Diem. Khang loaded his battalions on trucks and led them to Saigon where they joined companies of the 3rd Marine Battalion which had taken positions defending the Independence Palace.[2]: 36
In mid-December 1963, South Vietnam's new leaders removed Khang from his position as Commandant of the Vietnamese Marine Corps. Although he had not participated in the November coup that overthrew Diem, Khang had been a political appointee of Diem and as such was viewed as a potential threat to the new regime. After being promoted to Colonel, he was assigned to the Philippines as military attache. Lieutenant colonel Nguyen Ba Lien, who had been serving as Assistant Commandant and Chief of Staff of the VNMC, was appointed as Khang's successor, assuming command on 16 December.[2]: 109–10
The Marines together with the Airborne formed the South Vietnamese general reserve and had a significant political role to play in Saigon. Khang was allied with Air Vice Marshal Nguyễn Cao Kỳ, while General Dư Quốc Đống commanding the Airborne was an ally of Kỳ's rival General Nguyễn Văn Thiệu. The general reserve troops represented the real muscle of the Saigon-based Directory members and also constituted a balance of power between the rival officer cliques.[3]: 32 In addition Khang commanded the Capital Military District which controlled Saigon and its environs.[3]: 24
In July 1965 COMUSMACV General William Westmoreland described the performance of the marines as disappointing, a problem he traced to Khang, "a poor leader [with]... influential political connections."[3]: 102
He was also appointed as commander of III Corps on 9 June 1966.[3]: 256
He was awarded the Silver Star for valor June 27 – 29, 1967 by the President of the United States, Lyndon Johnson, and was described by General Wallace M. Greene as "as one of the finest field commanders in Asia."
During the Tet Offensive in early 1968 which temporarily made Saigon itself a critical battleground Westmoreland pushed for the separation of command of the Capital Military District and the appointment of a new commander. While Khang was nominal commander his deputy, Colonel Giam, controlled operations. Thiệu agreed but once again seemed willing to stick with Khang and Giam. Appearing to both fear and respect Khang, he admitted to US Ambassador Ellsworth Bunker that "unfortunately we do not have many real generals who know how to command more than a division," including, he added, himself. In early June 1968 Khang resigned his Corps command after misplaced US helicopter rocket fire killed several Kỳ supporters observing fighting in Saigon during the May Offensive. Thiệu replaced him with General Đỗ Cao Trí.[3]: 311–3 [4]
In 1972 Thiệu finally moved both Đống and Khang out of their Divisions, transferring Đống to command the Capital Military District and Khang to a nebulous "special assistant" post under General Cao Văn Viên on the Joint General Staff. Of the two, Americans considered Khang the better commander, but his past alliance with Kỳ proved a major liability.[3]: 487
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