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: that the Germans are to salvage 1800 barrels of fuel that had drifted ashore, on November 24; a German intelligence report for all fronts, on November 27; on the Russian Front: that the 4th Air Fleet is to strengthen the defences of Morosowskaya airfield on November 27; C passed this information on the airfield to the Soviets.