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 21 Italian Corps reports occupation by strong Allied forces and that battle outposts are to withdraw to the main defence line; and the Chiefs of Staff (COS) of the 1st Italian Army report indications of a successful British attack on the 164th Division, on March 26.