The most top-secret unit of the United States Army in the Vietnam War was established in January of 1964 and was called the Military Assistance Command, Vietnam - Studies and Observations Group, but ...
Military Assistance Command, Vietnam-Studies and Observations Group, or MACV-SOG, veterans and Vietnamese Montgard pose together during MACV-SOG heritage week, Fort Bragg N.C., Nov. 10, 2021. (Sgt.