2594

File Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/2594
Date 8 March 1944
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: Naval Headlines; and a ULTRA message from Tokyo to Manila on March 1 referring to a Japanese convoy of six tankers being attacked by enemy submarines on February 20 north-west of the Philippines.

Document Title Date
i Front Cover 8 March 1944 Download PDF (103 KB)
1 Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence 8 March 1944 Download PDF (538 KB)
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