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 a German Air Force (GAF) recce on September 5; on the Southern Russian Front: that a German division requested a GAF operation against Russian bombers on September 5; and a ground forces report for September 4; and on the Mediterranean: the GAF report damage being dealt to an escorted convoy on September 4.