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 measures to protect the defence of Main, on March 26; of indications that the 47th Corps is moving to the Dorsten area, on March 24; and of a further Hitler order to evacuate the west in order that the armed forces and the Volkssturm could carry out battle tasks, on March 24.