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 report from Kesselring for May 26 and operational orders for May 27 for the 10th Air Corps; a report on the Russian Front, for May 26; Naval Headlines; a Chinese report from Ankara on Turkish policy, on May 24; the Japanese Ministry of Foreign Affairs comments on Siamese territorial aspirations, on May 12; that Japan asked for details of the shipping sunk by Japanese forces, on May 23; and a Turkish report of engagement in the Coral Sea, on May 27.