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 South Europe: the Germans report the destruction of Pisa railway station, on September 19; that Army Group F has sent over 31,000 Italian prisoners to Germany and still has over 90,000, as of September 20; that the battle HQ of the German Air Force's (GAF's) 2nd Air Fleet is transferring to north Italy, probably to Vicenza, on September 20; that a steamer from Piombino-Elba was sunk, on September 22; that the German Navy in Venice urgently requires guards, police and dockyard staff, on September 21; of two German ships being sunk between Corsica and Elba, on September 21; that the Germans are to destroy Naples harbour, on September 22; that German E-boats are to capture shipping in the Adriatic, on September 22; of arrangements for Il Duce's journey, on September 24; and of German interest in the Palazzo Venezia's art treasures, on September 24; on South-east Europe: that the Germans are to attack Argostoli, on Cephalonia, on September 22; that two GAF long-range bomber units transferred to Greece from France and the Soviet Union, on September 21; a 2nd Panzer Army (in the Balkans) day report for September 20; the German Sea Defence Commandant for the Northern Adriatic reports on the chaotic situation, on September 21; and of the 2nd Panzer Army suffering supply difficulties in Dalmatia, on September 21; on Germany: that Goering requires monthly figures showing the exact distribution of new fighter aircraft to units, on September 21; on the Southern Russian Front: that the 4th Air Fleet requires only mobile anti-aircraft guns, and no static guns because of the development of the enemy situation, on September 21; from the Japanese ambassador in Berlin, on the legal status of the new Mussolini government, on September 17; and on the position of Mussolini, on Italian soldiers being sent to Germany as workers, and on fighting at Salerno, on September 18.