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: BONIFACE reports for Brigadier Jacob; the Deputy Prime Minister (PM); and Mr Loxley; on South Europe: of a German Air Force (GAF) attack on vehicles and tanks, on December 3; of the 2nd Air Fleet's operations, on December 3; and of the 26th Panzer Division's request for air reconnaissance on December 4; on the Southern Russian Front: the Admiral for the Black Sea's evening report, for December 2; and the Admiral for the Black Sea's report, for December 1.