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 North Africa: the German Air Force (GAF) at Tunis' situation report for March 25 highlighting that the Allies are conducting heavy air attacks at night; and on the Mediterranean: that an Axis tanker was torpedoed off the eastern Sicilian coast, on March 24.