Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

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: that flak reinforcements arrived in Tripoli, on April 5; on an urgent call for aviation fuel in the German forward area in Libya on April 5; that the intentions of the 4th Air Corps for April 5 include attacks on the Kerch peninsula and Sevastopol as soon as weather permits; an Italian intelligence assessment of Allied military dispositions forwarded by the Japanese ambassador in Ankara, on March 31; of Chilean assurances of neutrality given to the Japanese minister in Santiago on March 31; and the Japanese minister in Sofia reports a discussion on the Turkish attitude to the war, on March 26.