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 Commando Supremo's detailed instructions of February 18 to both Panzer Armies to seize the opportunity to gain a decisive success in Tunisia; that troop reinforcements are to be brought over by sea and air in the next few days; the Tunis Air Corps' report for February 20; that German Air Force (GAF) units at Bizerte are to deploy to Kairouan on February 21; that GAF Tunisia orders there to be fighter cover for advancing Panzer units, on February 21; and of GAF recce results over Tunisia, for February 20.