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: Naval Headlines, covering Italian activity (moves to Tobruk); on North Africa: that Rommel was lost, but has been found again, on June 23; a German Air Force (GAF) report on German advance positions, as of June 24; that the GAF advanced battle headquarters are to be at Sidi Barrani from June 25; and that GAF fighter aircraft are to move to the Sidi Barrani area on June 24.