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 Italy: a 10th Army casualty return for March 11 to 20; and on South-east Europe: of an order from the German Admiralty to the Admirals in the Adriatic and the Aegean for action in the event of a major Allied landing in the Balkans, on March 27.