Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3579
Conflicts Second World War
Themes Military Intelligence and Operations, Weapons Technology and Nuclear Warfare, Foreign Policy and International Relations
Regions Atlantic, East Asia, Europe, Latin America, Mediterranean
Countries Formosa, Gibraltar, Mexico, Singapore, Spain
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges


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 West Europe: of German Air Force (GAF) operational orders, for March 8; of 22 aircraft being destroyed and 10 damaged in attacks on GAF Roehrensee, on February 25 and 27; and of GAF measures to recover armour plates, on March 7; Naval Headlines; from the Mexican ambassador in Moscow, on the Spanish problem being discussed at Yalta, on February 21; from the Portuguese minister in Cape Town, on public acceptance of the British government's position, including that on Poland, on March 5; and T482/16 (see 8773).


predicting enemy intentions, Allied strategy, troop movements, Crossing of the Rhine, effects of bombing, aerial attacks, strafing, airfields, aircraft, defence, German air force, naval intelligence, evacuation, civilians, refugees, Eastern Front, German U-boats, naval operations, warships, shipping losses, German navy, guerrilla warfare, occupied Italy, Pacific War, naval warfare, diplomatic intelligence, American foreign policy, Spanish neutrality, public statements, Polish government

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