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 heavy Allied air attacks on Sousse, on December 13; the Germans report considerable damage done by bombing to the Sousse-Sfax-Gabes railway on December 13-14, and that measures are being taken to move supplies; the German supply staff at Sousse report the destruction of a railway bridge by enemy bombers, on December 13; the German sea transport at Tunis state that air attacks will make the harbour unusable and call for protection, on December 13; that the Panzer Army demands the shipping of fuel from Sfax, on December 13; the German Foreign Office state that the Italians were offended by German political decisions in Tunis, on December 11; that the German Air Force (GAF) in Africa is to be given aviation fuel at the expense of Castel Benito, on December 14; that GAF Africa tell Kesselring that the lack of aviation fuel will prevent the support of the Panzer Army, on December 15; a GAF Africa evening report for December 14, covering the Panzer Army's retreat after its flank was turned at Agheila; and that the XC Corps are to investigate a British order to take no prisoners, on December 15; and on the Southern Russian Front: of GAF orders for December 14; and of the destruction of Soviet forces.