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 the Panzer Army request's for replacements for officer casualties of the 164th Infantry Division on July 28; and on Crete: that the German Air Force (GAF) are to set up a fighter detachment at Heraklion on July 29.