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: of the German Air Force's (GAF's) night targets in southern Tunis, on the night of April 3-4; and that an Allied attack is expected in the Ousseltia-Pichon area, on April 2; on the Mediterranean: of GAF plans for developing airfields in Sardinia, on April 2; and of GAF measures for protecting and conserving aviation fuel, on April 1.