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 15 and their intentions for March 16 (support for an Africa Corps special operation); on GAF difficulties during a British air attack on Martuba, and the need for Freya radar, on March 15; on a GAF query whether a paratroop unit is to be flown to Derna, on March 15; and on the Mediterranean: the GAF are to receive aircraft torpedoes from the Black Sea area, from March 15.