1575

File Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1575
Date 7 April 1943
Government Department Government Code and Cypher School
File Accession Date 1993

Description

A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following reports: SHARK, that U-boat cipher keys for April 5-6 have been broken; on North Africa: of new Axis dispositions in the Akarit position, on April 6; and that the German Air Force (GAF) Stuka unit is to attack tanks near Ousseltia on April 7; Naval Headlines, covering U-boat operations in the Atlantic; and that an Axis sabotage operation against Bone is to go ahead on the night of April 7-8.

Document Title Date
i Front Cover 7 April 1943 Download PDF (262 KB)
1st Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence 7 April 1943 Download PDF (2.25 MB)
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