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: of Goering's order to the German Air Force (GAF) on February 16, that all men of 35 or younger are to be transferred from GAF staff duties to fighting units; and a message from the Prime Minister (PM) to the Chief of the Air Staff (CAS) with a reply.