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: a day report for October 3; of instructions for the formation of German Air Force (GAF) field brigades, on October 3; and of an exhortation from Goering to all Flak personnel to achieve successes despite shortages of equipment, on September 5.