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 German Air Force (GAF) report for July 28; and on GAF operations and intentions for July 28; on the Russian Front: a German report for July 26; and a German report for July 27; and on the Southern Russian Front: a GAF report on the ground situation, on July 28.