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 the German Air Force (GAF) at Tunis' operational orders for April 9; of there being no GAF night operations because of the weather and fuel situation, on April 8; that Army Group Africa are not to withdraw from the specified line before the evening of April 8; and that the 1st Italian Army is to withdraw, on April 7.