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: a small German unit reports fighting in the Marknassy area, on March 24; a reconnaissance unit reports the situation, as of March 24; that the German Africa Corps is counter-attacking south-east of El Guettar on March 24; the 2nd Air Corps' situation report for March 24; and a report on the 10th Panzer Division including its casualties and tank holding for March 23.