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 South Europe: a 10th Army report for January 27; Naval Headlines, covering U-boat operations; and from the Japanese ambassador in Ankara, forwarding the remarks of a German editor on the prospects for a second front, on January 20.