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: that German Air Force (GAF) reconnaissance was limited by convoy escort duties, on April 6; on GAF photo-reconnaissance of Arzeu harbour, on April 5, and a landing exercise; on GAF photo-reconnaissance of Oran, on April 5; that the GAF are to give priority to the transport of troops to Tunisia, on April 4; of German reinforcements to Sfax on April 4; and that the GAF are to reconnoitre the north-south roads in Tunisia, on April 3.