Material Classification

The types of material featured in the resource include:

• Correspondence
• Directives
• Financial Records
• Maps
• Meeting Minutes
• Memoranda
• Reports
• Signals Intelligence Reports

Twentieth-century conflicts represented in the resource include:

• Spanish Civil War
• Second World War
• Cold War
• Korean War

Users can browse, filter, and search the documents by the following themes:

• British Domestic Security
• Foreign Policy and International Relations
• Intelligence Funding and Finances
• Intelligence Gathering and Surveillance
• Intelligence Operations
• Intelligence Organisation and Administration
• Military Intelligence and Operations
• Propaganda, Censorship, and Psychological Warfare
• Signals Intelligence and Code-breaking
• Weapons Technology and Nuclear Warfare

The content of the material is international in its breadth and scope, and includes coverage of the following regions:

• Africa
• Atlantic
• East Asia
• Europe
• Latin America
• Mediterranean
• Middle East
• North America
• Pacific 
• South Asia