Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

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 contains a message from C to the Prime Minister (PM); and the following reports on South and West Europe: of Flak units from Belgium and France being given up to the 2nd Air Fleet in Italy, on July 24; and of the Italian tanker Alberto Fassio, previously reported to be on fire, being confirmed as sunk, on July 26.