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 on British action on November 19; on North Africa: that the GAF urgently need fighters on November 19; that GAF Derna is to cease communication with Italy on November 19; a GAF report of an advance of British tanks on November 19; of the GAF restricting radio traffic to important messages; that GAF bombers are to move forward on November 20; of GAF operations for November 19; and a GAF report for November 19.