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 includes the following reports on Yugoslavia: a German report on partisan activity in the Italian area, on March 13; and a German report on the tactical situation as of March 11 (heavy partisan attacks); and on the Russian fronts: that the German Air Force (GAF) are diverting anti-aircraft protection of various parts of Germany, to be sent to protect Eastern Front railways, on March 10.