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: the Ground Officer Commanding (GOC) Panzer Army orders the re-grouping of forces because of losses on September 13; and on the Mediterranean: of German Air Force (GAF) attacks on a British naval formation after the Tobruk raid.