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 signal from von Arnim indicating that the last cartridge had been fired in defence of Tunisia, on May 12; and on the Mediterranean: that the German Navy in Italy order the cessation of supply by sea to Pantelleria from 07:00 on May 12.