History of the 1st Aviation Brigade in Vietnam. The Brigade served in Vietnam from May 1966 until March 1973. At its peak strength, the 1st Aviation Brigade had over 4,000 helicopters and fixed wing aircraft and approximately 24,000 soldiers assigned.

History of the Military Assistance Command, Vietnam (MACV). MACV was created on February 8, 1962, to increase assistance to South Vietnam as well as to command and control all advisory and assistance efforts in Vietnam. The command was dissolved on March 29, 1973, after the withdrawal of U.S. combat troops from Vietnam. MACV was the highest level of command “in-country.” Therefore, the history of MACV is really the military history of the Vietnam War.

The 5th Infantry Division (Mechanized) is nicknamed the "Red Devils" or the "Red Diamond" for the simple design of its shoulder sleeve insignia. The 5th I.D., currently inactive, is a regular army division that saw service in WWI, WWII, Vietnam, and Operation Just Cause in Panama.

A summary history of the 3rd Infantry Division, nicknamed the "Rock of the Marne," is a mechanized infantry division of the United States Army based at Fort Stewart, Georgia. The unit has served the United States in World War I, World War II, Korea, the Cold War, and Iraq.