Established on January 24, 1964, MACV-SOG was a multi-service clandestine unit tasked with conducting covert operations before and during the Vietnam War. Military Assistance Command, Vietnam-Studies and Observations Group personnel consisted of U.S. Army Special Forces, U.S. Navy SEALs, U.S. Air Force air assets, U.S. Marine Corps force reconnaissance. It also included the CIA, which previously was in charge of these missions before SOG took o…