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: an evening report by the German Air Force (GAF) in Africa, for January 1, on the aircraft available and fuel supplies; and of Italian troops in the Mareth position, on January 1; on the Russian Front: the German secret service report on the Soviets' winter objectives; and on U.S. weapons deliveries to the Soviet Union, on January 1; and Naval Headlines, covering the lack of success of U-boats in the Black Sea.