Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

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 contains a message from the Chief of the Imperial General Staff (CIGS) to the Prime Minister (PM): a reply to a question on the accuracy of German estimates of Allied casualties; with a comparison of casualties on the Italian Front for the period from January 11-February 10; and a report on South Europe: on the German estimate of Allied casualties for the period from January 11-February 10.