Detachment A also known as 7781 Army Unit, and 39th Special Forces Operational Detachment was a specialised unit within the 10th Special Forces Group founded in 1956 and based in Bad Tölz, West Germany later West Berlin.[1] It consisted of approximately 90 members and operated primarily in Berlin.[2]
History
Detachment A was created in 1956 with the intent to conduct unconventional warfare (sabotage and training of potential anti-Soviet guerrillas) and stay-behind operations against the Soviet Union within Berlin should they have decided to invade while also on a larger scale, supporting the Supreme Allied Commander Europe in buying time for NATO to send more troops into the area.[3][4] It was originally based in Bad Tölz but was later relocated to West Berlin and placed within the Headquarters (HQ) Company of the 6th Infantry Regiment.[5][6]
In 1978 as part of a CIA operation, Detachment A was tasked to dig up cache sites for possible stay-behind operations and later also took part in the planning for Operation Eagle Claw, sending men into Iran and scouting key areas with the codename "storm cloud".[8][3][9]
Detachment A was deactivated between October and December 1984 with its existence only being declassified in 2014.[10][11]
James Stejskal, Special Forces Berlin: Clandestine Cold War Operations of the US Army’s Elite, 1956–1990, (Casemate, 2017), 333 pp., notes, timelines, appendices, bibliography, index.