The Military Assistance Command Vietnam, Studies and Observations Group (MACV-SOG) was an elite US Special Force to conduct clandestine operations in Vietnam. In 1964, owing to the US’ increasing number of military activities within Vietnam, US military structure underwent a marked change. Thus, the Military Assistance Command, Vietnam, Studies and Observations Group (MACV-SOG) was established in January 1964. Sometimes simply referred to as the ‘SOG’, the inconspicuously named unit was responsible for all manner of reconnaissance, special operations, and psyops in Vietnam during the Vietnam War. The group was comprised of Navy SEALs, Marine Recons, Air Force Special Operations soldiers, and Army Green Berets. The force was above top secret – operatives swore to secrecy for over 20 years. This sadly meant that families of MACV-SOG members were not informed if their loved ones were killed in action