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: of German Air Force (GAF) intentions for the night of November 30-December 1; and a German report on November 22; on the Russian Front: on GAF operations orders for November 30, facing strong Soviet attacks; a German report of November 29, noting the Germans are retreating; and on GAF air transport difficulties on November 29; and a Naval Headlines report on German and Italian activity.