1617

File Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1617
Date 19 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 14-17 have been broken; that German military reinforcements for Tunisia arrive in Naples, on April 18; and that the German Air Force (GAF) at Tunis proposes the withdrawal of a Stuka unit on April 20; on the Mediterranean: of GAF measures to be taken to deal with an Allied landing on Sardinia, on April 18; Naval Headlines, covering U-boat operations in the Atlantic; from the Japanese Foreign Minister: that ambassadors are to seek information on Hitler-Mussolini talks, on April 14; and from the Japanese minister to the Vatican, giving the Finnish minister's views on the war, as of April 13.

Document Title Date
i Front Cover 19 April 1943 Download PDF (288 KB)
1st Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence 19 April 1943 Download PDF (3.53 MB)
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