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 the 164th Division is to withdraw to a new line, on April 6; that the Italians are to evacuate Sfax and the harbour is to be demolished on April 7; that German divisions are to withdraw in the El Guettar sector, on April 6; of arrangements for an Axis withdrawal, on April 6; on the site of a new battle HQ of the 1st Italian Army, on April 6; and of Goering's instructions for safe and expeditious transport of German Air Force (GAF) aviation fuel, on April 6.