Religion & beliefs 13 History 12 Research & information: general 10 Christianity 8 Historical & comparative linguistics 8 Literary studies: classical, early & medieval 8 Biblical studies & exegesis 7 Judaism 7 Military history 7 Warfare & defence 7 Media studies 6 Terrorism, armed struggle 6 Ancient history: to c 500 CE 5 Archaeology 5 Architecture 5 Biology, life sciences 5 Defence strategy, planning & research 5 Espionage & secret services 5 International relations 5 Social & cultural history 5 Technology: general issues 5 Translation & interpretation 5 Ancient religions & mythologies 4 Christian theology 4 Classical history / classical civilisation 4 Jewish studies 4 Literature & literary studies 4 Politics & government 4 The Early Church 4 20th century history: c 1900 to c 2000 3