Project DELTA was the first of the Reconnaissance Projects, which were special reconnaissance (SR) units named with a Greek letter. The Reconnaissance Projects were formed by the U.S. Military Assistance Command, Vietnam (MACV) during the Vietnam War to collect operational intelligence in remote areas of South Vietnam.[1]
Project DELTA was established at Nha Trang in 1964 and consisted of six reconnaissance hunter-killer teams each composed of two United States Special Forces (USSF) and four Army of the Republic of Vietnam Special Forces (LLDB) and later supported by the 91st Ranger battalion. It was designated Detachment B-52, 5th Special Forces Group.[2]