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 large numbers of German Air Force (GAF) transports are to fly to Tunisia on April 19; and that GAF Ju 52s attacked off Cape Bon on April 18; on the Mediterranean: of an Allied air raid on Palermo airfield, on April 18; of damage being done to Palermo shipping in an Allied raid, on April 19; and a GAF general report on the ground situation, for April 19.