| Afghanistan | Beattie, Hugh | Afghanistan | Home Front, Post-war, Power |
| African Labour in Europe (Africa) | Fogarty, Richard | East and Central Africa, Egypt, France, Northern Africa, Union of South Africa, West Africa | Home Front, Power |
| Afrikaner (Boer) Rebellion (Union of South Africa) | Wessels, André | Union of South Africa | Violence |
| Alliance System 1914 | Kronenbitter, Günther | Afghanistan, Albania, Austria-Hungary, Belgium, Bulgaria, Egypt, France, Germany, Great Britain and Ireland, India, Italy, Japan, Latin America, Northern Africa, Ottoman Empire, Persia/Iran, Romania, Russian Empire, Serbia, Spain, USA | Pre-war |
| Armenian Genocide | Suny, Ronald Grigor | Armenia, Ottoman Empire | Violence |
| Arms Race prior to 1914, Armament Policy | Brose, Eric | France, Germany, Great Britain, Ottoman Empire, Russian Empire | Pre-war |
| Atrocities | Kramer, Alan | Austria, Belgium, France, Germany, Great Britain, Ottoman Empire, Serbia, Ukraine | Violence |
| Australia | Beaumont, Joan | Australia | Home Front, Post-war, Power, Pre-war, Violence |
| Baltic States and Finland | Richter, Klaus | Estonia, Finland, Latvia, Lithuania | Home Front, Post-war, Power, Pre-war, Violence |
| Belgium | De Schaepdrijver, Sophie | Belgium | Home Front, Post-war, Power, Violence |
| Bereavement and Mourning | Hettling, Manfred and Schölz, Tino | Australia, Austria, Belgium, Bulgaria, Canada, China, Czechoslovakia, Germany, Great Britain, Greece, Hungary, India, Japan, Korea, Lithuania, New Zealand, Ottoman Empire, Poland, Portugal, Russian Empire, USA, Union of South Africa | Home Front |
| Bereavement and Mourning (Africa) | Owino, Meshack | East and Central Africa, Southern Africa, West Africa | Home Front |
| Bereavement and Mourning (Ottoman Empire/ Middle East) | Unwalla, Pheroze | Ottoman Empire | Home Front |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Africa) | Koller, Christian | Africa | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Australia) | Stanley, Peter | Australia | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Austria-Hungary) | Lein, Richard | Austria, Hungary | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Belgium) | Spijkerman, Rose | Belgium | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Canada) | Smith, Nathan | Canada | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Indochina) | Vu-Hill, Kimloan | Indochina | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Ottoman Empire/ Middle East) | Beşikçi, Mehmet | Ottoman Empire | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Russian Empire) | Astashov, Aleksandr Borisovich | Russian Empire | Violence |
| Bulgaria | Hall, Richard C. | Bulgaria | Home Front, Post-war, Power, Pre-war, Violence |
| Burgfrieden/Union sacrée | Krumeich, Gerd | France, Germany | Power |
| Burma | Charney, Michael W. | Burma | Home Front, Power, Violence |
| Canada | Granatstein, J. L. | Canada | Home Front, Post-war, Pre-war, Violence |
| Centenary (Armenia) | Adjemian, Boris | Armenia | Post-war |
| Centenary (Canada) | Bird, Geoffrey | Belgium, Canada, France | Post-war |
| Centenary (Computer Games) | Kempshall, Chris | Belgium, France, Great Britain, Italy, Ottoman Empire, USA | Media, Post-war |
| Centenary (Historiography) | Dülffer, Jost | Africa, China, France, Germany, Great Britain, Japan, Ottoman Empire, Poland, USA | Post-war |
| Centenary (Italy) | Bracco, Barbara | Italy | Post-war |
| Centenary (New Zealand) | Phillips, Jock and Baird, Kingsley | New Zealand | Post-war |
| Centenary (Russia) | Nagornaja, Oxana Sergeevna | Russian Empire | Post-war |
| Centenary (Singapore) | Blackburn, Kevin | Singapore | Post-war |
| Centenary (Thailand) | Ruangsilp, Bhawan and Buadaeng, Din | Siam | Post-war |
| Centenary (Turkey) | Maksudyan, Nazan | Ottoman Empire | Post-war |
| Centenary (USA) | Wilson, Ross | USA | Post-war |
| China | Mühlhahn, Klaus | China | Home Front, Post-war, Power, Pre-war, Violence |
| Civilian and Military Power | Sondhaus, Lawrence | Austria, France, Germany, Great Britain, Hungary, Italy, Russian Empire, USA | Power |
| Civilian and Military Power (Australia) | Connor, John | Australia | Power |
| Civilian and Military Power (China) | Wu, Lin-Chun | China | Power |
| Civilian and Military Power (France) | Bourlet, Michaël | France | Power |
| Civilian and Military Power (Germany) | Grawe, Lukas | Germany | Power |
| Civilian and Military Power (Great Britain and Ireland) | Johnson, Matthew | Great Britain and Ireland | Power |
| Civilian and Military Power (Japan) | Dickinson, Frederick R. | Japan | Power, Pre-war |
| Civilian and Military Power (Newfoundland) | Baker, Melvin | Newfoundland | Home Front |
| Civilian and Military Power (South East Europe) | Newman, John Paul | Albania, Bulgaria, Greece, Montenegro, Romania, Serbia | Power |
| Civilian Morale | Ermacora, Matteo | Austria-Hungary, France, Germany, Great Britain and Ireland, Italy, Ottoman Empire, Russian Empire, USA | Home Front |
| Civil-Military Relations during World War I (Portugal) | Meneses, Filipe Ribeiro de | Portugal | Power, Violence |
| Civil-Military Relations during World War I (Russian Empire) | Porshneva, Olga | Russian Empire | Power, Violence |
| Colonial Empires after the War/Decolonization | Kitchen, James E. | Belgium, East and Central Africa, Egypt, France, Great Britain and Ireland, India, Indochina, Northern Africa, Ottoman Empire, Palestine, Portugal, Russian Empire, Syria | Post-war |
| Colonial Military Participation in Europe (Africa) | Koller, Christian | East and Central Africa, Northern Africa, West Africa | Violence |
| Colonial Society (Indochina) | Brocheux, Pierre | Indochina | Home Front, Power, Pre-war |
| Colonial State Power and Politics (Africa) | Pesek, Michael | Africa | Power |
| Colonial Warfare and Occupation (Africa) | Digre, Brian | East and Central Africa, Southern Africa, Union of South Africa, West Africa | Post-war, Power |
| Colonies (Italy) | Berhe, Simona | Italy | Power |
| Commemoration, Cult of the Fallen | Tison, Stéphane | Australia, Austria, Belgium, Canada, Czechoslovakia, France, Germany, Great Britain and Ireland, India, Italy, New Zealand, Newfoundland, Russian Empire, Serbia, USA, West Africa, Yugoslavia | Post-war |
| Commemoration, Cult of the Fallen (Africa) | Chetty, Suryakanthie and Ginio, Ruth | East and Central Africa, Southern Africa, Union of South Africa, West Africa | Post-war |
| Commemoration, Cult of the Fallen (India) | Chhina, Rana and Chhina, Adil | India | Post-war |
| Commemoration, Cult of the Fallen (Indochina) | Jennings, Eric Thomas | Indochina | Post-war |
| Commemoration, Cult of the Fallen (Union of South Africa) | de Vries, Jacques Jean Pierre | Union of South Africa | Post-war |
| Commemoration (Switzerland) | Kuhn, Konrad and Ziegler, Béatrice | Switzerland | Post-war |
| Controversy: The Media's Responsibility for Crises and Conflicts in the Age of Imperialism | Geiss, Peter | Austria, France, Germany, Great Britain, Northern Africa, Ottoman Empire, Russian Empire, Serbia, Spain, USA, Union of South Africa | Media, Pre-war |
| Controversy: Total War | Segesser, Daniel Marc | Australia, France, Germany, Great Britain, Ireland, Italy, Japan, USA | Power |
| Crumbling of Empires and Emerging States: Czechoslovakia and Yugoslavia as (Multi)national Countries | Boeckh, Katrin | Czechoslovakia, Yugoslavia | Power |
| Demobilization | Barry, Gearóid | Austria-Hungary, France, Germany, Great Britain, India, Ireland, Italy, Northern Africa, Poland, Russian Empire, USA | Post-war |
| Denmark | Sørensen, Nils Arne | Denmark | Home Front, Media, Post-war, Power, Pre-war, Violence |
| Diplomacy (Portugal) | Oliveira, Pedro Aires | Portugal | Power |
| Domestic Politics and Neutrality (Denmark) | Christiansen, Niels Finn | Denmark | Power |
| Domestic Politics and Neutrality (Norway) | Brazier, Eirik | Norway | Power |
| Domestic Politics and Neutrality (Spain) | Fuentes Codera, Maximiliano | Spain | Power |
| Domestic Politics and Neutrality (Sweden) | Hedén, Anne | Sweden | Power |
| Domestic Politics and Neutrality (Switzerland) | Moos, Carlo | Switzerland | Power |
| Domestic Politics and Neutrality (The Netherlands) | Onderwater, Pauline | The Netherlands | Power |
| Dominions’ Military Relationship to Great Britain 1902-1914 (British Dominions) | Marti, Steve | Australia, Canada, Great Britain, New Zealand, Newfoundland, Union of South Africa | Power, Pre-war, Violence |
| East and Central Africa | Samson, Anne | East and Central Africa | Power, Violence |
| Eastern Front | Dowling, Timothy C. | Russian Empire | Violence |
| Economies and Home Front (Union of South Africa) | Nasson, Bill | Union of South Africa | Home Front |
| Espionage | Debruyne, Emmanuel | Austria-Hungary, Belgium, France, Germany, Great Britain, Ireland, Italy, Russian Empire, Serbia, The Netherlands, USA | Violence |
| Exile and Migration (Spain) | Cordero Olivero, Inmaculada | Spain | Home Front |
| Exile and Migration (Sweden) | Kvist Geverts, Karin | Sweden | Home Front |
| Exile and Migration (Switzerland) | Huber, Anja | Switzerland | Home Front |
| Exile and Migration (The Netherlands) | Schrover, Marlou | The Netherlands | Home Front |
| Extra-European Theatres of War | Moyd, Michelle | Australia, China, East and Central Africa, Egypt, France, India, Indochina, Iraq, Japan, Micronesia, New Zealand, Northern Africa, Ottoman Empire, Southern Africa, Syria, West Africa | Violence |
| Film/Cinema | Smither, Roger | Belgium, France, Germany, Great Britain, Italy, Russian Empire, USA | Media |
| Film/Cinema (Denmark) | Bendtsen, Bjarne Søndergaard | Denmark | Media |
| Film/Cinema (Ottoman Empire) | Çeliktemel-Thomen, Özde | Ottoman Empire | Media |
| Film/Cinema (Spain) | Sánchez-Salas, Daniel | Spain | Media |
| Film/Cinema (Sweden) | Zander, Ulf | Sweden | Media |
| Film/Cinema (The Netherlands) | Zwaan, Klaas de | The Netherlands | Media |
| Film/Cinema (USA) | DeBauche, Leslie Midkiff | USA | Media |
| Food and Nutrition (Indochina) | Peters, Erica J. | Indochina | Home Front |
| Forced Labour | Thiel, Jens and Westerhoff, Christian | Austria-Hungary, Belgium, France, Germany, Poland, Russian Empire | Violence |
| Foreign Policy and Business Diplomacy (Denmark) | Andersen, Steen | Denmark | Power |
| Foreign Policy (Spain) | Montero Jiménez, José Antonio | Spain | Power |
| Foreign Policy (Sweden) | Åselius, Gunnar | Sweden | Power |
| Foreign Policy (The Netherlands) | Abbenhuis, Maartje | The Netherlands | Power |
| France | Beaupré, Nicolas | France | Home Front, Power, Pre-war, Violence |
| German versus US Intelligence in Latin America | Bisher, Jamie | Brazil, Chile, Germany, Mexico, USA | Media, Power |
| Germany | Hirschfeld, Gerhard | Germany | Home Front, Power, Pre-war, Violence |
| Governments, Parliaments and Parties | Oppelland, Torsten | Austria-Hungary, Belgium, Canada, France, Germany, Great Britain and Ireland, Italy, Japan, Ottoman Empire, Russian Empire, Sweden, USA | Power |
| Governments, Parliaments and Parties (Australia) | Connor, John | Australia | Power |
| Governments, Parliaments and Parties (Austria) | Boyer, John W. | Austria | Power |
| Governments, Parliaments and Parties (Belgium) | Gerard, Emmanuel | Belgium | Power |
| Governments, Parliaments and Parties (Canada) | MacKenzie, David | Canada | Power |
| Governments, Parliaments and Parties (China) | Wu, Lin-Chun | China | Power |
| Governments, Parliaments and Parties (France) | Bock, Fabienne | France | Power |
| Governments, Parliaments and Parties (Germany) | Oppelland, Torsten | Germany | Power |
| Governments, Parliaments and Parties (Great Britain and Ireland) | Johnson, Matthew | Great Britain, Ireland | Power |
| Governments-Parliaments and Parties (Hungary) | Joó, András | Hungary | Power |
| Governments, Parliaments and Parties (Italy) | Papadia, Elena | Italy | Power |
| Governments, Parliaments and Parties (Japan) | Dickinson, Frederick R. | Japan | Power |
| Governments, Parliaments and Parties, Labour, Labour Movements and Strikes (Union of South Africa) | Visser, Wessel Pretorius | Union of South Africa | Home Front, Power |
| Governments, Parliaments and Parties (Ottoman Empire/Middle East) | Ahmad, Feroz | Ottoman Empire | Power |
| Governments, Parliaments and Parties; Political Movements and Protostate Formation (East Central Europe) | Richter, Klaus and Szlanta, Piotr | Estonia, Latvia, Lithuania, Poland | Power |
| Governments, Parliaments and Parties (Portugal) | Meneses, Filipe Ribeiro de | Portugal | Power |
| Governments, Parliaments and Parties (USA) | Kennedy, Ross | USA | Power |
| Great Britain | Badsey, Stephen | Great Britain | Home Front, Media, Post-war, Power, Violence |
| Greece | Hassiotis, Loukianos | Greece | Media, Power, Pre-war, Violence |
| Health and Medicine (India) | Sehrawat, Samiksha | India | Home Front |
| Historiography 1918-Today (Africa) | Koller, Christian | Africa | Post-war |
| Historiography 1918-Today: Bulgaria (South East Europe) | Minkov, Stefan Marinov | Bulgaria | Post-war |
| Historiography 1918-Today (France) | Tison, Stéphane | France | Post-war |
| Historiography 1918-Today (Italy) | Labanca, Nicola | Italy | Post-war |
| Historiography 1918-Today (Japan) | Revelant, Andrea | Japan | Post-war |
| Historiography 1918-Today (Latin America) | Rinke, Stefan | Argentina, Brazil, Chile, Mexico | Post-war |
| Historiography 1918-Today (Middle East/Arab Lands) | Smith, Charles D. | Ottoman Empire | Post-war |
| Historiography 1918-Today: Serbia and Montenegro (South East Europe) | Krivokapic-Jovic, Gordana | Montenegro, Serbia, Yugoslavia | Post-war |
| Historiography 1918-Today (Union of South Africa) | Katz, David Brock | Union of South Africa | Post-war |
| Historiography 1918-Today (USA) | Price, James S. | USA | Post-war |
| Hong Kong | Kwong, Chi Man | Hong Kong | |
| Humanitarianism (Denmark) | Sørensen, Nils Arne | Denmark | Home Front |
| Humanitarianism (Norway) | Mageli, Eldrid | Norway | Home Front |
| Humanitarianism (Spain) | Fuentes Codera, Maximiliano | Spain | Home Front |
| Humanitarianism (Sweden) | Sturfelt, Lina | Sweden | Home Front |
| Humanitarianism (The Netherlands) | Bergen, Leo Van | The Netherlands | Home Front |
| Imperialism | Barth, Boris | Austria-Hungary, Belgium, China, East and Central Africa, France, Germany, Great Britain, Italy, Japan, Northern Africa, Ottoman Empire, Portugal, Serbia, Southern Africa, USA, Union of South Africa, West Africa | Pre-war |
| Indigenous Experience of War (British Dominions) | Riseman, Noah and Winegard, Timothy C. | Australia, Canada, New Zealand, Newfoundland, Union of South Africa | Violence |
| Indigenous Experiences of War (USA) | Voigt, Matthias | USA | Violence |
| Indochinese Workers in France (Indochina) | Vu-Hill, Kimloan | Indochina | Home Front |
| Intelligence and Espionage (Denmark) | Bruhn, Kristian | Denmark | Violence |
| Intelligence and Espionage (Norway) | Brandal, Nik. and Teige, Ola | Norway | Violence |
| Intelligence and Espionage (Spain) | García Sanz, Carolina | Spain | Violence |
| Intelligence and Espionage (Sweden) | Agrell, Wilhelm | Sweden | Violence |
| Intelligence and Espionage (The Netherlands) | Klinkert, Wim | The Netherlands | Violence |
| International Committee of the Red Cross | Herrmann, Irène and Palmieri, Daniel | Switzerland | Home Front, Post-war, Power, Pre-war, Violence |
| International Law and the Laws of War | Quataert, Jean H. | Austria-Hungary, Belgium, Central America and Caribbean, China, France, Germany, Great Britain, Italy, Japan, Ottoman Empire, Russian Empire, South America, Switzerland, The Netherlands, USA | Pre-war |
| Internees (Switzerland) | Bürgisser, Thomas | Switzerland | Violence |
| Italian Front | Wilcox, Vanda | Italy | Violence |
| July Crisis 1914 | Mombauer, Annika | Austria-Hungary, France, Germany, Great Britain, Russian Empire, Serbia | Pre-war |
| Labour (India) | Singha, Radhika | India | Home Front |
| Labour, Labour Movements, Trade Unions and Strikes (Switzerland) | Koller, Christian | Switzerland | Home Front |
| Labour Movements, Trade Unions and Strikes (Canada) | St. Croix, Brad | Canada | Home Front |
| Labour Movements, Trade Unions and Strikes (USA) | Taillon, Paul Michel | USA | Home Front |
| Labour (Portugal) | Azevedo, Ana Carina Gerardo da Silva | Portugal | Home Front |
| Latin America | Rinke, Stefan and Kriegesmann, Karina | Argentina, Brazil, Chile, Mexico, Panama, Peru | Home Front, Media, Power, Pre-war, Violence |
| League of Nations | Ziegerhofer, Anita | Australia, Austria-Hungary, Belgium, Brazil, Central America and Caribbean, Ecuador, Finland, France, Germany, Great Britain and Ireland, Iraq, Italy, Japan, New Zealand, Poland, Russian Empire, Southern Africa, Switzerland, The Netherlands, USA, Union of South Africa | Post-war, Power |
| Literature (Africa) | Orosz, Kenneth J. | Africa | Media |
| Literature (India) | Das, Santanu | India | Media |
| Literature (Ottoman Empire) | Adak, Hülya | Ottoman Empire | Media |
| Literature: Serbia (South East Europe) | Ilić Marković, Gordana | Serbia | Media |
| Literature (Switzerland) | Billeter, Nicole | Switzerland | Media |
| Luxembourg | Majerus, Benoît and Roemer, Charel | Luxembourg | Home Front, Post-war, Power, Violence |
| Making Sense of the War (Africa) | Pesek, Michael | Africa | Media |
| Making Sense of the War (Australia) | Ziino, Bart | Australia | Media |
| Making Sense of the War (China) | He, Yan | China | Media |
| Making Sense of the War (Denmark) | Bendtsen, Bjarne Søndergaard | Denmark | Media |
| Making Sense of the War (Germany) | Ungern-Sternberg, Jürgen von | Germany | Media |
| Making Sense of the War (Great Britain and Ireland) | Pennell, Catriona | Great Britain, Ireland | Media |
| Making Sense of the War (India) | Markovits, Claude | India | Media |
| Making Sense of the War (Italy) | Lunzer, Renate | Italy | Media |
| Making Sense of the War (Latin America) | Goebel, Michael and Tato, María Inés | Argentina, Brazil, Colombia, Mexico, Nicaragua, Peru | Media |
| Making Sense of the War (New Zealand) | Ross, Kirstie | New Zealand | Media |
| Making Sense of the War (Ottoman Empire/Middle East) | Minasidis, Charalampos | Ottoman Empire | Media |
| Making Sense of the War (Portugal) | Meneses, Filipe Ribeiro de | Portugal | Media |
| Making Sense of the War (Spain) | García Sanz, Carolina | Spain | Media |
| Making Sense of the War (Sweden) | Hedén, Anne | Sweden | Media |
| Making Sense of the War (The Netherlands) | Brolsma, Marjet | The Netherlands | Media |
| Making Sense of the War (USA) | Little, Branden | USA | Media |
| Media Discourse after the War | Keil, André | Austria, Belgium, France, Germany, Great Britain and Ireland | Media |
| Migration (Norway) | Brazier, Eirik | Norway | Home Front |
| Military and Strategy (Denmark) | Clemmesen, Michael H. | Denmark | Violence |
| Military and Strategy (Spain) | Alcalde, Ángel | Spain | Power |
| Military and Strategy (Sweden) | Åselius, Gunnar | Sweden | Violence |
| Military and Strategy (The Netherlands) | Klinkert, Wim | The Netherlands | Violence |
| Minorities in Germany (Denmark) | Schultz Hansen, Hans | Denmark | Home Front |
| Montenegro | Raspopović, Radoslav | Montenegro | Post-war, Power, Pre-war, Violence |
| Mourning and Cult of the Fallen (Portugal) | Correia, Silvia | Portugal | Post-war |
| Music (Portugal) | Félix, Pedro | Portugal | Media |
| Nationalism | Newman, John Paul | Austria-Hungary, Bulgaria, France, Germany, Greece, Italy, Ottoman Empire, Romania, Serbia | Pre-war |
| Nationalities (Austria-Hungary) | Stergar, Rok | Austria-Hungary | Home Front |
| Naval Blockade (of Germany) | Kramer, Alan | Germany, Great Britain and Ireland | Home Front, Power, Violence |
| Negotiating and Mediating Conduct of War | Stibbe, Matthew | Austria-Hungary, Belgium, China, East and Central Africa, France, Germany, Great Britain, Italy, Japan, Northern Africa, Ottoman Empire, Russian Empire, Spain, Sweden, Switzerland, The Netherlands, USA, West Africa | Violence |
| Newfoundland | Hiller, James K. and O'Brien, Mike | Newfoundland | Home Front, Power, Violence |
| New Zealand | Hunter, Kate | New Zealand | Home Front, Post-war, Power, Violence |
| Northern Africa | DeGeorges, Thomas Patrick | Northern Africa | Home Front, Post-war, Pre-war, Violence |
| Norway | Haug, Karl Erik | Norway | Home Front, Media, Power, Violence |
| Occupation after the War (Belgium and France) | Godfroid, Anne | Belgium, France | Post-war, Power |
| Occupation during and after the War (China) | Danner, Lukas K. | China | Post-war, Power |
| Occupation during and after the War (Middle East) | Mazza, Roberto | Ottoman Empire | Post-war, Power |
| Occupation during and after the War (Ottoman Empire) | Criss, Nur Bilge | Ottoman Empire | Post-war, Power |
| Occupation during and after the War (South East Europe) | Ristović, Milan | Albania, Bulgaria, Montenegro, Romania, Serbia | Post-war, Power |
| Occupation during the War (Belgium and France) | Wegner, Larissa | Belgium, France | Power |
| Organization of War Economies | Blum, Matthias, Eloranta, Jari and Osinsky, Pavel | Austria-Hungary, France, Germany, Great Britain, Russian Empire | Home Front |
| Organization of War Economies (Africa) | Pallaver, Karin | East and Central Africa, Northern Africa, Southern Africa, Union of South Africa, West Africa | Home Front |
| Organization of War Economies (USA) | Cornelius Smith, Erika | USA | Home Front |
| Othering/Atrocity Propaganda | Bruendel, Steffen | Austria-Hungary, France, Germany, Great Britain, Russian Empire, USA | Media |
| Ottoman Empire/Middle East | Yanıkdağ, Yücel | Ottoman Empire | Home Front, Post-war, Power, Pre-war, Violence |
| Pacifism | Patterson, David S. | Austria, France, Germany, Great Britain, Russian Empire, The Netherlands, USA | Power |
| Peace Initiatives | Kennedy, Ross | Austria-Hungary, France, Germany, Great Britain, Italy, Russian Empire, USA | Power |
| Persia/Iran | Atabaki, Touraj | Persia/Iran | Home Front, Post-war, Power, Violence |
| Poland | Szlanta, Piotr | Poland | Home Front, Post-war, Power, Pre-war, Violence |
| Portugal | Rollo, Maria Fernanda, Pires, Ana Paula and Meneses, Filipe Ribeiro de | Portugal | Home Front, Power, Pre-war, Violence |
| Post-war Colonial Administration (Africa) | Authaler, Caroline and Michels, Stefanie | East and Central Africa, Southern Africa, Union of South Africa, West Africa | Post-war |
| Post-war Economies (Africa) | Walker-Said, Charlotte | East and Central Africa, Southern Africa, Union of South Africa, West Africa | Post-war |
| Post-war Economies (Australia) | Bongiorno, Frank | Australia | Post-war |
| Post-war Economies (East Central Europe) | Morawski, Wojciech | Estonia, Finland, Latvia, Lithuania, Poland, Russian Empire | Post-war |
| Post-war Economies (Great Britain and Ireland) | Godden, Christopher | Great Britain and Ireland | Post-war |
| Post-war Economies (Middle East) | Schewe, Eric | Middle East | Post-war |
| Post-war Economies (Turkey) | Barlas, Dilek | Ottoman Empire | Post-war |
| Post-war Settlement (Portugal) | Meneses, Filipe Ribeiro de | Portugal | Post-war |
| Post-war Societies | Bessel, Richard | Austria-Hungary, Belgium, Denmark, France, Germany, Great Britain and Ireland, Greece, Ottoman Empire, Poland, Serbia, USA, Ukraine, West Africa, Yugoslavia | Post-war |
| Post-war Societies (Africa) | Nkwi, Walter Gam | East and Central Africa, West Africa | Post-war |
| Post-war Societies (Australia) | Bongiorno, Frank | Australia | Post-war |
| Post-war Societies (India) | Sarkar, Sumit | India | Post-war |
| Post-war Societies (Turkey) | Criss, Nur Bilge | Ottoman Empire | Post-war |
| Post-war Treaties (Ottoman Empire/ Middle East) | Smith, Leonard V. | Ottoman Empire | Post-war |
| Post-war Turmoil and Violence (Hungary) | Révész, Tamás | Hungary | Post-war |
| Post-war Turmoil and Violence (Yugoslavia) | Bozanich, Stevan | Yugoslavia | Post-war |
| Press/Journalism (Italy) | Forno, Mauro | Italy | Media |
| Press/Journalism (Middle East) | Grams, Benan | Ottoman Empire | Media |
| Press/Journalism (Ottoman Empire) | Enacar, Ekin | Ottoman Empire | Media |
| Press/Journalism (USA) | Miller, Alisa | USA | Media |
| Pre-war Military Planning | Seligmann, Matthew S. | Austria-Hungary, France, Germany, Great Britain and Ireland | Pre-war |
| Pre-war Military Planning (Africa) | Stapleton, Timothy J. | East and Central Africa, Northern Africa, Southern Africa, Union of South Africa, West Africa | Pre-war |
| Pre-war Military Planning and War Aims (Union of South Africa) | Katz, David Brock | Union of South Africa | Pre-war |
| Pre-war Military Planning (Australia) | Wilcox, Craig | Australia | Pre-war |
| Pre-war Military Planning (Canada) | Wood, James A. | Canada | Pre-war |
| Pre-war Military Planning (France) | Cosson, Olivier | France | Pre-war |
| Pre-war Military Planning (Great Britain) | Strachan, Hew | Great Britain | Pre-war |
| Pre-war Military Planning (Italy) | Cappellano, Filippo | Italy | Pre-war |
| Pre-war Military Planning (Ottoman Empire) | Moreau, Odile | Ottoman Empire | Pre-war |
| Pre-war Military Planning (South East Europe) | Tasić, Dmitar | Bulgaria, Greece, Montenegro, Romania, Serbia | Pre-war |
| Pre-war Societies (Ottoman Empire/Middle East) | Dannies, Kate | Ottoman Empire | Pre-war |
| Prisoners of War | Jones, Heather | Austria-Hungary, Bulgaria, France, Germany, Great Britain, Italy, Ottoman Empire, Russian Empire, Serbia | Violence |
| Prisoners of War (East Central Europe) | Szlanta, Piotr and Richter, Klaus | Estonia, Finland, Latvia, Lithuania, Poland, Russian Empire | Violence |
| Prisoners of War (Germany) | Jones, Heather and Hinz, Uta | Germany | Violence |
| Prisoners of War (India) | Liebau, Heike | India | Violence |
| Propaganda at Home and Abroad | Demm, Eberhard | Austria, Belgium, France, Germany, Great Britain, Ireland, Italy, Poland, Russian Empire, USA | Media |
| Propaganda at Home and in Exile (South East Europe) | Foster, Samuel | Bulgaria, Greece, Montenegro, Romania, Serbia, Yugoslavia | Media |
| Propaganda at Home (Australia) | Robertson, Emily | Australia | Media |
| Propaganda at Home (Ottoman Empire) | Dölek-Sever, Deniz | Germany, Ottoman Empire | Media |
| Propaganda (China) | Steen, Andreas | China | Media |
| Propaganda in the Colonies (Africa) | Orosz, Kenneth J. | Africa | Media |
| Propaganda War (Latin America) | Rinke, Stefan | Argentina, Chile, Mexico, Paraguay | Media |
| Property Rights and Economic Nationalism | Caglioti, Daniela L. | Armenia, Austria-Hungary, France, Germany, Great Britain, Italy, Ottoman Empire, Russian Empire, USA | Home Front |
| Raw Materials | Chancerel, Pierre | Austria-Hungary, Brazil, Chile, China, France, Germany, Great Britain, India, Italy, Japan, Mexico, Russian Empire, USA | Home Front |
| Recruitment and Conscription (Canada) | Sharpe, Christopher | Canada | Violence |
| Red Cross | Cotter, Cédric | Austria-Hungary, Denmark, France, Germany, Great Britain, Russian Empire, Sweden, Switzerland, USA | Home Front |
| Religious Missionaries and the Colonial State (Indochina) | Keith, Charles | Indochina | Home Front, Power |
| Religious Mobilization and Popular Belief (Italy) | Paiano, Maria | Italy | Home Front |
| Resistance and Rebellions (Africa) | Moyd, Michelle | Africa | Power |
| Responses to the War (India) | Das, Santanu | India | Home Front |
| Revolutionary Networks (India) | Singh, Gajendra | India | Power |
| Revolutions | Fulwider, Chad R. | Austria-Hungary, Bulgaria, France, Germany, Greece, Italy, Ottoman Empire, Russian Empire | Power |
| Revolutions and Rebellions: Arab Revolt (Ottoman Empire/Middle East) | El Bakri, Alia | Ottoman Empire | Power |
| Revolutions (East Central Europe) | Brudek, Paweł | Estonia, Finland, Latvia, Lithuania, Poland, Russian Empire | Power |
| Romania | Heppner, Harald and Gräf, Rudolf | Romania | Home Front, Post-war, Power, Pre-war, Violence |
| Russian Empire | Sanborn, Joshua A. | Russian Empire | Home Front, Post-war, Power, Pre-war, Violence |
| Science and Technology (Africa) | Page, Melvin E. | East and Central Africa, Northern Africa, Southern Africa, Union of South Africa, West Africa | Home Front |
| Science and Technology (Austria-Hungary) | Gottsmann, Andreas | Austria-Hungary | Home Front |
| Science and Technology (Ottoman Empire/Middle East) | Williams, Elizabeth | Ottoman Empire | Home Front |
| Science and Technology (USA) | Heller, Charles E. | USA | Home Front |
| Sea Transport and Supply | Miller B., Michael | France, Germany, Great Britain, India, Italy, Norway, USA | Home Front |
| Serbia | Bjelajac, Mile | Serbia | Home Front, Post-war, Power, Pre-war, Violence |
| Shifts and Tensions in Ethnic/National Groups | Chernev, Borislav | Austria-Hungary, Ottoman Empire, Russian Empire | Violence |
| Siam | Hell, Stefan | Siam | Home Front, Post-war, Power, Violence |
| Social Conflict | Morelon, Claire | Austria-Hungary, Belgium, France, Germany, Great Britain, Italy, Japan, Ottoman Empire, Russian Empire, Spain, Switzerland | Home Front |
| Social Conflict and Control, Protest and Repression (Indochina) | Morlat, Patrice | Indochina | Home Front |
| Social Conflict and Control, Protest and Repression (Portugal) | Dias Pereira, Joana | Portugal | Home Front |
| Social Conflict and Control, Protest and Repression (USA) | Strauss, Lon | USA | Home Front |
| Social Costs of War | Redding, Kimberly A. | Austria-Hungary, Belarus, Belgium, France, Germany, Great Britain, Italy, Ottoman Empire, Poland, Serbia, The Netherlands, USA, Ukraine | Home Front |
| South Africa and the German East Africa Campaign (Union of South Africa) | Samson, Anne | Union of South Africa | Violence |
| South African Invasion of German South West Africa (Union of South Africa) | Kleynhans, Evert | Southern Africa, Union of South Africa | Violence |
| South African Troops in Europe and the Middle East (Union of South Africa) | Delport, Anri | Union of South Africa | Violence |
| Southern Africa | Storey Kelleher, William | Southern Africa | Home Front, Power, Pre-war, Violence |
| Spain | Ponce, Javier | Spain | Home Front, Media, Post-war, Power, Pre-war, Violence |
| Staging War. Theatre 1914-1918 | Krivanec, Eva | Austria, France, Germany, Great Britain | Home Front, Media |
| State, Civil Society and Relief Organizations for War | Little, Branden | Australia, Austria-Hungary, Belgium, Canada, France, Germany, Great Britain, Italy, Russian Empire, USA | Home Front |
| Sweden | Qvarnström, Sofi | Sweden | Home Front, Media, Post-war, Power, Pre-war |
| Switzerland | Tanner, Jakob | Switzerland | Home Front, Media, Power |
| Taiwan | Dawley, Evan | Taiwan | Power |
| The Church (Spain) | Ruiz Sánchez, José-Leonardo | Spain | Home Front |
| The Historiography of the Origins of the First World War | Mulligan, William | Austria-Hungary, France, Germany, Great Britain, Russian Empire | Post-war, Pre-war |
| The Home Front (Newfoundland) | Bishop Stirling, Terry | Newfoundland | Home Front |
| The Military Collapse of the Central Powers | Tunstall, Graydon A. | Austria, Czechoslovakia, Germany, Hungary, Italy, Ottoman Empire | Violence |
| The Netherlands | Kruizinga, Samuël, Moeyes, Paul and Klinkert, Wim | The Netherlands | Media, Post-war, Power, Pre-war, Violence |
| The Paris Peace Conference and its Consequences | Sharp, Alan | Austria-Hungary, Belgium, Bulgaria, China, Egypt, Estonia, France, Germany, Great Britain, Greece, India, Iraq, Ireland, Italy, Japan, Latvia, Lebanon, Lithuania, Montenegro, Ottoman Empire, Palestine, Poland, Romania, Russian Empire, Serbia, Syria, USA, Yugoslavia | Post-war |
| The Way to War | Williamson, Jr., Samuel R. | Austria-Hungary, France, Germany, Great Britain, Ireland, Italy, Japan, Northern Africa, Russian Empire, Serbia | Pre-war |
| Union of South Africa | Stapleton, Timothy J. | Union of South Africa | Home Front, Post-war, Power, Pre-war, Violence |
| United States of America | Keene, Jennifer D. | USA | Home Front, Media, Post-war, Power, Violence |
| Urban Societies and Cities | Lees, Andrew | Austria-Hungary, France, Germany, Great Britain, Ottoman Empire, Russian Empire | Home Front |
| War Aims and Peace Discussions (USA) | Cooper, John Milton | USA | Power |
| War Aims and War Aims Discussions | Soutou, Georges-Henri | Austria-Hungary, France, Germany, Great Britain, Russian Empire, USA | Power |
| War Aims and War Aims Discussions (Africa) | Digre, Brian | East and Central Africa, Northern Africa, Southern Africa, Union of South Africa, West Africa | Power |
| War Aims and War Aims Discussions (Australia) | Beaumont, Joan | Australia | Power |
| War Aims and War Aims Discussions (Austria-Hungary) | Williamson, Jr., Samuel R. | Austria, Hungary | Power |
| War Aims and War Aims Discussions (Belgium) | Tuyll, Hubert van | Belgium | Power |
| War Aims and War Aims Discussions (China) | Danner, Lukas K. | China | Power |
| War Aims and War Aims Discussions (East Central Europe) | Boysen, Jens | Lithuania, Poland | Power |
| War Aims and War Aims Discussions (France) | Tison, Stéphane | France | Power |
| War Aims and War Aims Discussions (Germany) | Löffelbein, Nils | Germany | Power |
| War Aims and War Aims Discussions (Great Britain and Ireland) | Millman, Brock | Great Britain and Ireland | Power |
| War Aims and War Aims Discussions (Italy) | Baravelli, Andrea | Italy | Power |
| War Aims and War Aims Discussions (Japan) | Gates, Rustin | Japan | Power |
| War Aims and War Aims Discussions (Ottoman Empire) | Yasamee, Feroze | Ottoman Empire | Power |
| War Aims and War Aims Discussions (Portugal) | Meneses, Filipe Ribeiro de | Portugal | Power |
| War Aims and War Aims Discussions (Russian Empire) | Schimmelpenninck van der Oye, David | Russian Empire | Power |
| War Aims and War Aims Discussions (South East Europe) | Bjelajac, Mile | Albania, Bulgaria, Greece, Montenegro, Romania, Serbia, Yugoslavia | Power |
| War and Colonial Finance (Africa) | Pallaver, Karin | East and Central Africa, Union of South Africa, West Africa | Home Front |
| Warfare 1914-1918 (Belgium) | Simoens, Tom | Belgium | Violence |
| Warfare 1914-1918 (Canada) | Oliver, Dean F. | Canada | Violence |
| Warfare 1914-1918 (Italy) | Cappellano, Filippo | Italy | Violence |
| Warfare 1914-1918 (Japan) | Melzer, Jürgen | Japan | Violence |
| Warfare 1914-1918 (Ottoman Empire/Middle East) | Baş, Mehmet Fatih | Egypt, Iraq, Lebanon, Ottoman Empire, Palestine, Syria | Violence |
| Warfare 1914-1918 (Russian Empire) | Steinberg, John W. | Russian Empire | Violence |
| Warfare 1914-1918 (South East Europe) | Tasić, Dmitar | Albania, Bulgaria, Montenegro, Romania, Serbia | Violence |
| Warfare 1917-1918 (USA) | Grotelueschen, Mark E. | USA | Violence |
| War Finance | Mulder, Nicholas | Austria-Hungary, France, Germany, Great Britain, Italy, Russian Empire, USA | Home Front |
| War Finance (Australia) | Mann, Jatinder | Australia | Home Front |
| War Finance (Austria-Hungary) | Pogány, Ágnes | Austria, Hungary | Home Front |
| War Finance (Great Britain and Ireland) | Horn, Martin | Great Britain | Home Front |
| War Finance (Italy) | Degli Esposti, Fabio | Italy | Home Front |
| War Finance (Ottoman Empire) | Ozavci, Ozan | Ottoman Empire | Home Front |
| War in the Balkans | Hall, Richard C. | Albania, Bulgaria, Greece, Montenegro, Ottoman Empire, Romania, Serbia | Violence |
| War Losses (Africa) | Lunn, Joe Harris | East and Central Africa, Northern Africa, Southern Africa, Union of South Africa, West Africa | Violence |
| War Losses and Reparations (China) | Tang, Chi-hua | China | Violence |
| War Losses (Ottoman Empire/Middle East) | Baş, Mehmet Fatih | Ottoman Empire | Violence |
| Wartime and Post-war Economies (Denmark) | Pedersen, Jan | Denmark | Home Front |
| Wartime and Post-war Economies (Japan) | Schiltz, Michael | Japan | Home Front, Post-war |
| Wartime and Post-war Economies (Spain) | Sánchez Picón, Andrés and García Gómez, José Joaquín | Spain | Home Front |
| Wartime and Post-war Economies (Sweden) | Häggqvist, Henric | Sweden | Home Front |
| Wartime and Post-war Economies (The Netherlands) | Klemann, Hein A. M. | The Netherlands | Home Front |
| Wartime and Post-war Societies (Denmark) | Østergaard Schultz, Annette | Denmark | Home Front |
| Wartime and Post-war Societies (Spain) | Martorell Linares, Miguel Angel | Spain | Home Front |
| Wartime and Post-war Societies (Sweden) | Sturfelt, Lina | Sweden | Home Front |
| Wartime and Post-war Societies (The Netherlands) | Kristel, Conny | The Netherlands | Home Front |
| West Africa | Njung, George N. | West Africa | Power, Pre-war, Violence |
| Western Front | Krause, Jonathan | France, Germany, Great Britain | Violence |
| Willingly to War. Public Response to the Outbreak of War | Becker, Jean-Jacques | Australia, Austria-Hungary, Belgium, Brazil, Bulgaria, Canada, China, France, Germany, Great Britain, Greece, Ireland, Italy, Japan, New Zealand, Newfoundland, Portugal, Romania, Russian Empire, Serbia, Switzerland, USA, Union of South Africa | Power |
| Women, Gender, Social Movements (Switzerland) | Joris, Elisabeth | Switzerland | Home Front |
| Women's Mobilization for War (Belgium) | Gubin, Eliane, Flour, Els and Kympers, Marie | Belgium | Home Front |
| Women's Mobilization for War (India) | Das, Santanu | India | Home Front |
| Women's Mobilization for War (Italy) | Bartoloni, Stefania | Italy | Home Front |
| Women War Reporters | Seul, Stephanie | Australia, Austria, Belgium, Canada, China, France, Germany, Great Britain, Hungary, Italy, Lithuania, New Zealand, Norway, Ottoman Empire, Poland, Russian Empire, Serbia, Spain, Sweden, The Netherlands, USA | Media |
| Yugoslavia | Trgovčević, Ljubinka | Yugoslavia | Post-war, Power, Pre-war, Violence |
