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 includes the following reports on North Africa: the Panzer Army report the British landing west of Tobruk, on September 16; and the Chief of Staff (COS) of the Air Officer Commanding (AOC) in Chief South seeks information on the landing, on September 16.