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: Mr Bromley's summary (see also 9045); on Western Europe: that Himmler's HQ train is to be routed from north of Pilsen to Deggendorf, east-south-east of Regensburg, on April 17; and that 30 German Air Force (GAF) aircraft were destroyed and 45 damaged during Allied raids on airfields in southern Germany, on April 10/11.