Detachment A
special Forces unit from the Cold War
Detachment "A" (often shortened to "Det A") was a clandestine United States Army Special Forces unit based in West Berlin during the Cold War. Officially designated as the 39th Special Forces Detachment (Airborne), it operated from 1956 until its inactivation in 1984. Detachment A was tasked with operations behind enemy lines in the event of a conflict with the Soviet Bloc, including sabotage of key targets and organizing stay-behind resistance in East Germany. Its existence and activities remained highly classified throughout its service.
History
In August 1956, six modified Operational Detachment Alpha teams and a staff element selected from the 10th Special Forces Group left Bad Tölz in privately owned vehicles for West Berlin. Each team was composed of one senior NCO (a master sergeant) and five enlisted team members; with the staff, the group comprised approximately 90 men. Days later, these forces would form Detachment A on 1 September 1956. Within the Army, its unclassified nickname was "Detachment A," while its formal unit title – 39th Special Forces Detachment – and its actual mission were kept classified. By 1958, after several moves, the unit rehomed at the Andrews Barracks, West Berlin, and was reassigned to HHC, US Army Garrison, Berlin. To maintain secrecy, in 1962 the unit was again reorganized and nominally listed as the Security Platoon, Regimental Headquarters, 6th Infantry Regiment, part of the U.S. Army's Berlin Brigade.
Begin with the source’s own compact description: “Detachment A” is special Forces unit from the Cold War. The dossier treats that line as a proposition to test through Detachment, special and Forces, not as a finished interpretation.
Why this record matters
The phrase “special Forces unit from the Cold War” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The record creator and administrative purpose are central evidence, because official documentation reflects both action and institutional priorities. The source revision retrieved here is dated Sep 13, 2026. The linked authority identifier is Q134573141. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1956, 1984, 1958 and 1962.
Institutional narratives can privilege the records that survived while minimizing voices that were never formally collected. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Compare institutional narratives with records created by participants and affected communities. Dates and formal titles are useful anchors, but not substitutes for context.
- Event chronology
- Institutional context
- Locating named record creators
Contemporary correspondence, government or organizational records, oral histories and cited historical scholarship.
Three-step research path
- Establish the record: confirm the title “Detachment A”, its source revision and the description used here.
- Expand the search: follow Detachment A primary sources, Detachment A archive and Detachment research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Detachment A”?
- What chronology connects this entry to wider political or social change?
- Who created the surviving record, and for what administrative purpose?
Search terms from this dossier
This entry incorporates text from “Detachment A” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.