to his deputy commanding generals of USARV, successively Lieutenant Generals Frank T. Mildren and William J. McCaffrey. Abrams claimed late in 1971 that he held onto the USARV command primarily because "I wanted control over assignment of General Officers." He personally reviewed and approved all assignments and reassignments of Army generals in South Vietnam and exercised a strong influence over which generals the Department of the Army sent to his command. In early 1969 in order to support the Vietnamization effort USARV established an advisor school at Dĩ An Base Camp to train U.S. advisors who would be assigned to Mobile Advisory Teams. In May 1972 following the withdrawal of most U.S. military forces from South Vietnam, USARV was merged with MACV to become USARV/MACV Support Command. In early November 1972 USARV/MACV Support Command began planning for the final 60 day withdrawal of U.S. Army personnel and the support system from South Vietnam. The command was disbanded on 28 March 1973 after completion of withdrawal of all combat and support units. List of deputy commanders Insignia Shoulder Sleeve Insignia Description/Blazon A shield 3 inches (7.62 cm) in height and 2 inches (5.08 cm) in width overall; within a 1/8 inch (.32 cm) white border three vertical stripes yellow, blue and red, on the center blue stripe a sword pointing upward, blade white and handle yellow. Symbolism Yellow and red are the colors of Vietnam. The blue center represents the United States, together with the sword it alludes to the U.S. Military in Vietnam. Background The shoulder sleeve insignia was approved on 10 February 1966. (TIOH Dwg. No. A-1-408) Combat Service Identification Badge Description/Blazon A gold color metal and enamel device 2 inches (5.08 cm) in height consisting of a design similar to the shoulder sleeve insignia. Distinctive Unit Insignia The United States Army Vietnam was not authorized a Distinctive Unit Insignia ("Crest") by the U.S. Army Institute of Heraldry. References Military units and formations of the United States Army in the Vietnam War Regional commands of the United States Army Military units and formations established in 1965 Military units and formations disestablished in 1973