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 report from Brigadier Jacob for the Prime Minister (PM); a BONIFACE report for Mr Loxley; a SUNSET intelligence report for November 14; on South-east Europe: a situation report for Leros indicates that the Allies' strength is unbroken, on November 13; on Southern Europe: six battle reports for November 12 and 13; on the Russian Front: that the 6th Air Fleet is to transfer to Priluki on November 14; that German Air Force (GAF) reconnaissance for November 12 points to a further strong Russian attack in the Vitebsk area, on November 13; and a situation report on the Crimean area for November 12 and early November 13.