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 South Europe: the Commander in Chief (C-in-C) for the Southwest's strength return, for April 13 (a summary has been kept by the Prime Minister [PM]); and the German Air Force (GAF) at Lucca reports raids on the Leghorn and Florence areas, on April 14; on South-east Europe: a GAF day report for April 13 of ground activity in Croatia; and a GAF morning report of raids, on April 14; Naval Headlines 1017 (see 6295); and on Germany: of the morale and internal conditions there, as at March 26.