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: BONIFACE summaries for the Deputy Prime Minister (PM), Brigadier Jacob and Mr Loxley; on Southern Europe: of Allied penetration of about 1 mile on the Adriatic coastal sector, on November 22; that an Allied raid on November 22 results in serious damage to the harbour at Civita Vecchia; that the Germans engage in island operations off Zara, about 50 miles north of Sibenik, but their advance is being hampered by impassable country; of a tunnel near La Spezia being seriously damaged by an explosion on November 17 but repairs are hoped to be completed by November 26; and of a mutiny by a Croatian Legion company operating with the Germans in Yugoslavia, and their refusal to go to Germany; on the Russian Front: of a German steamship being sunk while carrying arms to Sevastopol; on Germany: of the main Admiralty building in Berlin being destroyed during an Allied air raid on November 22; and on a general shortage of manpower in the German Air Force (GAF); a message from C to Special Communications Unit (SCU) Cairo for Gore-Browne and Spencer (the cover name for the PM while he is abroad); on Southern Europe/Italy: the German 76th Corps' situation report for November 22; that Allied fighter-bombers attack Civita Vecchia harbour, on November 22; that an Allied air raid destroys the railway lines to Civita Vecchia harbour, on November 22; that the German Army calls for necessary vessels and fighter escorts for island operations off Zara, on November 22; further information on the military operation off Zara, with the German advance being hampered by impassable terrain, on November 22; that the railway near La Spezia is expected to be unserviceable until November 26 following sabotage in the tunnel on November 17; a detailed summary of German operations in Croatia for November 21, covering the operations HANDSHAKE and GRANITE, a company of the Croation Legion being disarmed after refusing to go to Germany, and German forces facing strong guerrilla bands; on the Russian Front: that the German forces in Crimea, who are expecting a major Soviet offensive at any time, are now running short of anti-aircraft ammunition, on November 22; and that a German steamship en route from Odessa to Sevastopol with a cargo of fuel and weapons was sunk on November 23; on Germany/the German Navy: of the Navy HQ building in Berlin being hit in an Allied air raid, with the operations division of the naval staff now being run by the Northern Group, on November 23; on Southern Europe: that the passage of auxiliary sailing vessels along the southern Adriatic coast was prevented at night by Allied destroyer patrols and during the day by Allied air superiority; on Yugoslavia: of a German ceasefire agreement with the Chetniks; and of Foreign Office (FO) speculation on the involvement of Mikhailovic.