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; on Southern Italy: that the 2nd Air Corps orders the evacuation of Italy south of the Nicastro line to be completed in 4 to 5 days, from August 30; a Sea and Air situation report from the 2nd Air Fleet for August 29, detailing convoy sightings in the Mediterranean, Allied air raids on Terni, Cancello, Capua, Griciano and the Southern tip of Sardinia, and German Air Force (GAF) sorties against Allied formations; a situation report from the Commander in Chief (CinC) South for August 29, stating that the Italian ships Citta Di Spezia and Castello were sunk by Allied submarines north of the Otranto Straits, that GAF aircraft attacked shipping in Augusta harbour, and railway installations in Northern Sicily; a day report from the 14th Panzer Corps, noting that its Battle HQ has moved to 2 km north-west of Esperia, and that elements of the Hermann Goering Panzer Division are in Castrovillari, on August 29; a German intelligence appreciation of an Allied landing in the toe of Italy, on August 29; that the Germans are to install 4-barrelled anti-aircraft weapons in landing craft to combat an Allied air offensive, on August 31; a German intelligence report on the locations of Italian units, on August 23; of Italian Admiralty orders to sweep a minefield to allow the passage of the fleet in the event of Allied landings on Sardinia and Corsica, on August 31; a British intelligence summary for the week ending August 30 for the whole of Europe; on South-east Europe: that German Admirals are to examine measures to render certain harbours unusable in the event of a changed situation necessitating evacuation, on August 29; and a summary of a German intelligence report relating to German and Italian forces' relations in the Slovene frontier area, on August 30.