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 on North Africa: details of the despatch of certain minor German units to Africa, on April 20; that no German Air Force (GAF) transport aircraft are to fly to North Africa on April 21 but all available aircraft are to fly to Naples to load up for Sardinia; and Naval Headlines.