Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

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: a BONIFACE summary from Brigadier Hollis for the Prime Minister (PM); and a SUNSET intelligence report; on South Europe: that the Axis are to prepare to demolish airfields in Calabria, on August 19; a German Air Force (GAF) situation report, for August 17; and a German report to Berlin that Italian civilians are being evacuated from Taranto, on August 20; on South-east Europe: of the Germans consigning tanks and artillery to Bulgaria, on August 18; from the Japanese ambassador in Berlin, that the Germans have increased production of aircraft to counter Allied bombing, on August 17; from the Japanese ambassador in Vichy, on the German arrest of French officials and demands for workers to be sent to Germany, on August 15; from the Japanese ambassador in Rome, that Kesselring has been appointed Commander in Chief (C-in-C) for southern Italy and Rommel C-in-C for northern Italy, with plans for Rome to be an open city, on August 17; and from Berlin to Tokyo, on the need for the Japanese to leave as quickly as possible, on August 19.