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 Mediterranean: that the Air Officer Commanding (AOC) in Chief South is forming a new fighter bomber unit, on October 21; on North Africa: a German Air Force (GAF) evening report for October 21, noting GAF and RAF attacks, and that the Italian Air Force is short of fuel; and the Panzer Army reports a grave fuel shortage and requests the immediate sailing of a tanker, on October 19.