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 Western Europe: the Commander in Chief (C-in-C) West reports divisional movements by rail, on January 2, 5 and 6; Naval Headlines; from the Japanese ambassador in Ankara, relating Turkey's perception of the European situation, on January 5; from the Greek minister in Paris, describing Field-Marshal Montgomery's wider command, on January 6; and from the Ministry of Foreign Affairs in Berlin, German press directives, on January 6.