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 9050 and 9057); and on Western Europe: that the 19th Army in the Black Forest area was ordered on April 19 not to destroy gas ammunition when carrying out demolitions, and that a special type of gas is to be evacuated to barges on the Elbe and Danube, with the remainder to wait until other important ammunition has been sent off.