year, into one of the best units in the ARVN. Trưởng handpicked his leading subordinate officers and put his battalions in the hands of majors who had many years of combat experience. Unlike most, he eschewed politics in choosing his officers, and implemented new training programs to improve the capability of his troops and Regional (RF) and Popular Forces (PF) that augmented them. Trưởng's dedication to his unit and leadership significantly raised the morale of his subordinates. As part of his strategy of better integrating the territorial forces with the regular army, Trưởng had his battalion commanders act as district chiefs, who normally worked only with the territorial forces. As a result, the regulars began to coordinate their pacification campaigns more effectively with the paramilitary forces. In 1967, Trưởng's 1st Division assaulted and dismantled the VC infrastructure and a large part of their fighters from the Luong Co-Dong Xuyen-My Xa Front in Hương Trà District in Thừa Thiên-Huế Province. Trưởng was rewarded with a promotion to brigadier general. During the Tết Offensive, Trưởng led the 1st Division in the Battle of Huế as the People's Army of Vietnam (PAVN) and VC were expelled from the old imperial city after three weeks of bitter street fighting. Following the famous victory in the citadel, Trưởng was given a second star and made a major general. In August 1970, he was assigned to command IV Corps, which oversaw the Mekong Delta region. He was based at the Corps' headquarters in Cần Thơ. General Creighton Abrams, the head of American forces in Vietnam, recommended Trưởng to President Nguyễn Văn Thiệu, saying, "I can recommend, without any reservations at all ... Trưởng. I think he's proved over and over and in all facets — pacification, military operations, whatever it is". He was promoted to lieutenant general in June 1971. Corps commander During his tenure in the Mekong Delta, Trưởng established a system of outposts along the border with Cambodia to block infiltration of PAVN/VC personnel and supplies into the region. He used the three divisions in his Corps in regimental-sized combined arms task forces and staged sweeps to seek and destroy PAVN/VC forces in their strongholds. He increased the capability of the RF/PF, which had a reputation for unreliability in his area, making them a productive part of his anti-PAVN/VC apparatus. Trưởng later said that these forces "shed their paramilitary origins and increasingly became full-fledged