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 Southern Europe: of the priorities laid down by Keitel for transports away from Italy, on October 19; and on South-east Europe: that a German Air Force (GAF) transport unit is to transfer from Italy to southern Russia, on October 19.