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 the Moscow Front: indications of a unit moving on October 25; on the Russian Front: the German Air Force (GAF) Fliegerkorps is to move; on the Moscow Front: a 12th Flak Division situation report for October 26; on North Africa: the GAF report that a cruiser was sunk; on North Africa: the GAF are seeking sigint information on the landing grounds used by British night bombers; on the Mediterranean: GAF opinions on an Italian report of a Spitfire shot down over Malta; and the Anti-Aircraft (AA) Group at Narvik is to be disbanded.