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: a German Air Force (GAF) report for March 19; a GAF reconnaissance and operations report for March 19; that the GAF are to reconnaissance aircraft on Egyptian aerodromes on March 20; a GAF operations report for March 19 and their intentions for March 20; and on losses including GAF aviation fuel on the SS Achaia, on March 19; and on the Russian Front: a German ground forces report for March 18; on the GAF 8th Air Corps' intentions for the night of March 18-19; and on orders for GAF signals stations to jam Swedish radio beacons, on March 17.