Falklands: GCHQ intercept of Argentine signal (1442Z) ("Commander Task Force states that Argentine submarines have entered exclusion zone; air and surface units of Task Force 79 are authorised to operate in zone if necessary") [declassified May 2023]

Document type:	Declassified documents
Source:	HW92/14 f55
Editorial comments:	Read other JIC and GCHQ documents from the Falkland War. Read other documents selected from this file.
Importance ranking:	Major
Word count:	3pp
Themes:	Defence (Falklands), Security services & intelligence