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 Southern Europe: that German intelligence learns that Allied landings are to take place on June 17, on June 5; on North Africa: that a German Air Force (GAF) attack on shipping in Bone harbour is planned for the night of June 8; Naval Headlines; from the Japanese ambassador in Rome, describing conversations with various colleagues on the war situation, on May 28; and a Turkish report on German offensive preparations, from June 4.