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: that the Commander in Chief (C-in-C) West orders the use of the 18th and 167th Divisions in the Remagen bridgehead, on March 17; that Oberkommando der Wehrmacht (OKW) considers an Allied penetration, on March 17; that Hitler orders a company of Tiger assault guns to be employed at the point where the Reich motorway borders the main defence line, on March 17; an appreciation of Allied intentions by the Supreme Command of the Navy, on March 16; and of orders from Army Group G that all Rhine bridges are to be provided with demolition charges, on March 16; Naval Headlines; from the Minister of Foreign Affairs in Tokyo, detailing air raids on Tokyo and Nagoya, on March 13; and noting Siamese support for Japanese measures in Indo-China, on March 14.