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: the Africa Corps assesses that the Allies from Gafsa are trying to effect a linkup with the 8th Army, on March 31; of the 10th Panzer Division being in urgent need of fuel, on April 1; the 10th Panzer Division's supply return, on April 1; that the German 164th Division requires lorries to transport equipment and personnel, on April 1; that the 15th Panzer Division requires ammunition, on April 1; that Battle Group Lang requires ammunition, on April 1; the 21st Panzer Division's evening report, for March 31; an Italian 1st Army report for April 1; the German Air Force (GAF) in Tunis' 2nd evening report, on April 2; and GAF Tunis' 1st evening report, on April 2.