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: of German Air Force (GAF) counter-measures against a recce by the RAF; on North Africa: that glass splinters were found in the Panzer Army's bread; and of suspected sabotage, on September 23; and on the Southern Russian Front: of GAF bombing orders for the night of September 25-26.