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 contains a message from Brigadier LRC Hollis for the Prime Minister (PM); a BONIFACE summary; and the following reports on the Mediterranean: of the dispositions for German Air Force (GAF) anti-tank aircraft on Sardinia, on May 16; of GAF aviation fuel and equipment being shipped to Corsica, on May 16; that GAF heavy fighters with Ju88s are to transfer from Sicily to Greece, on May 16; and of successful Allied air raids on Sardinia, on May 14; on the Southern Russian Front: that the Germans claim successes in Kuban, on May 16; and Naval Headlines.