| African Labour in Europe (Africa) | Fogarty, Richard | East and Central Africa, Egypt, 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 |
| Air Warfare | Mahoney, Ross and Pugh, James | France, Germany, Great Britain, Italy, Russian Empire | Violence |
| Air Warfare (Italy) | Caffarena, Fabio | Italy | Violence |
| Albania | Blumi, Isa | Albania | Home Front, Post-war, Power, Pre-war, 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 |
| Anzac (Australia) | Seal, Graham | Australia | Violence |
| Art (Australia) | Hutchison, Margaret | Australia | Media |
| 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 (Ottoman Empire/ Middle East) | Unwalla, Pheroze | Ottoman Empire | Home Front |
| Bereavement and Mourning (South East Europe) | Pintar, Olga Manojlovic | Bulgaria, Romania, Serbia, Yugoslavia | 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 (Germany) | Bruendel, Steffen | Germany | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Great Britain and Ireland) | Meyer, Jessica | Great Britain and Ireland | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Indochina) | Vu-Hill, Kimloan | Indochina | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Italy) | Wilcox, Vanda | Italy | Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (New Zealand) | Phillips, Jock | New Zealand | 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 (Portugal) | Meneses, Filipe Ribeiro de | Portugal | 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 |
| Canada | Granatstein, J. L. | Canada | Home Front, Post-war, Pre-war, Violence |
| Centenary (Armenia) | Adjemian, Boris | Armenia | Post-war |
| Centenary (Battlefield Tourism) | Fathi, Romain | Australia, Belgium, France, Italy, Ottoman Empire | Post-war, Violence |
| Centenary (Computer Games) | Kempshall, Chris | Belgium, France, Great Britain, Italy, Ottoman Empire, USA | Media, 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 (South Africa) | Nasson, Bill | Southern Africa, Union of South Africa | Post-war |
| Centenary (Thailand) | Ruangsilp, Bhawan and Buadaeng, Din | Siam | Post-war |
| Centenary (Turkey) | Maksudyan, Nazan | Ottoman Empire | Post-war |
| Centenary (Ukraine) | Yurchuk, Yuliya | Ukraine | 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 (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 (Italy) | Mondini, Marco | Italy | 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 |
| Colonial Military Participation in Europe (Africa) | Koller, Christian | East and Central Africa, Northern Africa, West Africa | Violence |
| 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 (Australia) | Beaumont, Joan | Australia | 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 (New Zealand) | Harris, Margaret | New Zealand | Post-war |
| Commemoration, Cult of the Fallen (Union of South Africa) | de Vries, Jacques Jean Pierre | Union of South Africa | Post-war |
| Destruction of the Ecosystem | Keller, Tait | Belgium, Canada, France, Germany, Indonesia, Mexico, USA | Violence |
| Diplomacy (Portugal) | Oliveira, Pedro Aires | Portugal | Power |
| Disease and Public Health (Ottoman Empire/Middle East) | Schulze-Tanielian, Melanie | Ottoman Empire | Home Front |
| Dominion Soldiers on Leave in Europe (New Zealand) | Barnes, Felicity | New Zealand | Violence |
| Drugs | Kamieński, Łukasz | Austria-Hungary, Canada, France, Germany, Great Britain, Ottoman Empire, Russian Empire, USA | 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 |
| 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 (East Central Europe) | Pryt, Karina | Poland | Media |
| Film/Cinema (France) | Paris, Michael | France | Media |
| Film/Cinema (Great Britain) | Paris, Michael | Great Britain | Media, Post-war |
| Film/Cinema (Ottoman Empire) | Çeliktemel-Thomen, Özde | Ottoman Empire | Media |
| Film/Cinema (South East Europe) | Vučetić, Radina | Albania, Bulgaria, Greece, Romania, Serbia, Yugoslavia | Media |
| Food and Nutrition (Africa) | Samson, Anne and Page, Melvin E. | East and Central Africa, Northern Africa, Southern Africa, West Africa | Home Front |
| Forced Labour | Thiel, Jens and Westerhoff, Christian | Austria-Hungary, Belgium, France, Germany, Poland, Russian Empire | Violence |
| 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, Mexico | 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 (Austria) | Boyer, John W. | Austria | Power |
| Governments, Parliaments and Parties (Belgium) | Gerard, Emmanuel | Belgium | Power |
| Governments-Parliaments and Parties (Hungary) | Joó, András | Hungary | Power |
| Governments, Parliaments and Parties (Italy) | Papadia, Elena | Italy | Power |
| Governments, Parliaments and Parties (Ottoman Empire/Middle East) | Ahmad, Feroz | Ottoman Empire | 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 (Australia) | Holbrook, Carolyn | Australia | Post-war |
| Historiography 1918-Today (Canada) | Shaw, Amy J. | Canada | Post-war |
| Historiography 1918-Today (Great Britain) | Mayhew, Alex | Great Britain | Post-war |
| Historiography 1918-Today (India) | Stadtler, Florian | India | Post-war |
| Historiography 1918-Today (Italy) | Labanca, Nicola | Italy | 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 |
| Hong Kong | Kwong, Chi Man | Hong Kong | |
| Humanitarianism (The Netherlands) | van Bergen, Leo | The Netherlands | Home Front |
| 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 |
| Ireland | Grayson, Richard S. | Ireland | Home Front, Post-war, Power, Pre-war, Violence |
| Italian Front | Wilcox, Vanda | Italy | Violence |
| Labour (India) | Singha, Radhika | India | Home Front |
| Labour, Labour Movements and Strikes (Ottoman Empire/ Middle East) | Thompson, Elizabeth and Akin, Yiğit | Ottoman Empire | Home Front |
| Literature | Budgen, David | Austria, France, Germany, Great Britain, Russian Empire, USA | Media |
| Literature (Africa) | Orosz, Kenneth J. | Africa | Media |
| Literature (Germany) | Hüppauf, Bernd | Germany | Media |
| Literature (Great Britain and Ireland) | Potter, Jane | Great Britain, Ireland | Media |
| Literature (India) | Das, Santanu | India | Media |
| Literature (Italy) | Todero, Fabio | Italy | Media |
| Literature (Japan) | Nakayama, Hiroaki | Japan | Media |
| Literature (Portugal) | Araújo, Francisco Miguel | Portugal | Media |
| Making Sense of the War (Africa) | Pesek, Michael | Africa | Media |
| Making Sense of the War (Belgium) | De Schaepdrijver, Sophie | Belgium | Media |
| Making Sense of the War (Italy) | Lunzer, Renate | Italy | 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 |
| Maps, Geography and the Representation of Space | Schneider, Ute | Belgium, France, Germany, Great Britain | Media |
| Military and Strategy (Denmark) | Clemmesen, Michael H. | Denmark | Violence |
| Military and Strategy (Sweden) | Åselius, Gunnar | Sweden | Violence |
| Military and Strategy (The Netherlands) | Klinkert, Wim | The Netherlands | Violence |
| Military Developments of World War I | Zabecki, David T. | France, Germany, Great Britain | Violence |
| Military Lessons of the First World War | Gardner, Nikolas | France, Germany, Great Britain, Italy, Russian Empire, USA | Post-war, Violence |
| Military Planning and Wartime Recruitment (India) | Omissi, David | India | 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 |
| Mutilation and Disfiguration | Anderson, Julie | Australia, Canada, France, Germany, Great Britain, New Zealand, USA | Violence |
| Nationalities (Austria-Hungary) | Stergar, Rok | Austria-Hungary | Home Front |
| Naval Blockade (of Germany) | Kramer, Alan | Germany | Home Front, Power, Violence |
| Naval Warfare | Osborne, Eric W. | Austria-Hungary, Germany, Great Britain, Italy, Ottoman Empire, USA | Violence |
| Naval Warfare (USA) | Halpern, Paul G. | USA | 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 |
| Northern Africa | DeGeorges, Thomas Patrick | Northern Africa | Home Front, Post-war, Pre-war, Violence |
| Occupation during and after the War (Austria-Hungary) | Dornik, Wolfram | Albania, Austria, Italy, Montenegro, Poland, Romania, Serbia, Ukraine | Post-war, Power |
| Occupation during and after the War (China) | Danner, Lukas K. | China | Post-war, Power |
| Occupation during and after the War (East Central Europe) | Lehnstaedt, Stephan | Poland | Post-war, Power |
| Occupation during and after the War (Germany) | Schröder, Joachim and Watson, Alexander | Germany | Post-war, Power |
| Occupation during and after the War (Italy) | Ermacora, Matteo | Italy | Post-war, Power |
| Occupation during and after the War (Middle East) | Mazza, Roberto | Ottoman Empire | Post-war, Power |
| Occupation during and after the War (Russian Empire) | Dornik, Wolfram | Russian Empire | Post-war, Power |
| On the Road to Modern War | Showalter, Dennis | France, Germany, Great Britain, Italy, Japan, Russian Empire, USA | Violence |
| Organization of War Economies (Ottoman Empire/Middle East) | Pitts, Graham | Ottoman Empire | 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 |
| Persia/Iran | Atabaki, Touraj | Persia/Iran | Home Front, Post-war, Power, Violence |
| Photography | Roberts, Hilary | Australia, Austria-Hungary, Belgium, Canada, France, Germany, Great Britain, New Zealand, Russian Empire, USA | Media |
| Polish War Myths (East Central Europe) | Brudek, Paweł | Poland | Media, Post-war |
| Portugal | Rollo, Maria Fernanda, Pires, Ana Paula and Meneses, Filipe Ribeiro de | Portugal | Home Front, Power, Pre-war, Violence |
| Post-war Military Action and Violence (East Central Europe) | Böhler, Jochen | Belarus, Estonia, Latvia, Lithuania, Poland, Ukraine | Post-war, Violence |
| Post-war Turmoil and Violence (Hungary) | Révész, Tamás | Hungary | Post-war |
| Post-war Turmoil and Violence (Yugoslavia) | Bozanich, Stevan | Yugoslavia | Post-war |
| Press/Journalism (East Central Europe) | Brudek, Paweł | Estonia, Finland, Latvia, Lithuania, Poland | Media, Pre-war |
| Press/Journalism (Italy) | Forno, Mauro | Italy | Media |
| Press/Journalism (Russian Empire) | Zhdanova, Irina | Russian Empire | 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 (Italy) | Cappellano, Filippo | Italy | Pre-war |
| Pre-war Military Planning (Ottoman Empire) | Moreau, Odile | Ottoman Empire | Pre-war |
| Pre-war Military Planning (Russian Empire) | Sergeev, Evgenii Iur’evich | Russian 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 (Africa) | Steinbach, Daniel | East and Central Africa, Egypt, Northern Africa, Southern Africa, Union of South Africa, West Africa | Violence |
| Prisoners of War and Internees (Union of South Africa) | Dedering, Tilman | Union of South Africa | Violence |
| Prisoners of War (Australia) | Pegram, Aaron | Australia | Violence |
| Prisoners of War (East Central Europe) | Szlanta, Piotr and Richter, Klaus | Estonia, Finland, Latvia, Lithuania, Poland | Violence |
| Prisoners of War (Germany) | Jones, Heather and Hinz, Uta | Germany | Violence |
| Prisoners of War (Italy) | Gorgolini, Luca | Italy | Violence |
| Prisoners of War (Russian Empire) | Nachtigal, Reinhard and Radauer, Lena | Russian Empire | Violence |
| Propaganda at Home and Abroad (East Central Europe) | Brudek, Paweł | Estonia, Finland, Latvia, Lithuania, Poland | Media |
| Propaganda at Home and in Exile (South East Europe) | Foster, Samuel | Bulgaria, Greece, Montenegro, Romania, Serbia, Yugoslavia | Media |
| Propaganda at Home (Austria-Hungary) | Cornwall, Mark | Austria-Hungary | Media |
| Propaganda at Home (Ottoman Empire) | Dölek-Sever, Deniz | Ottoman Empire | Media |
| Propaganda in the Colonies (Africa) | Orosz, Kenneth J. | Africa | Media |
| Propaganda: Media in War Politics | Badsey, Stephen | France, Germany, Great Britain and Ireland, USA | Media |
| Recruitment and Conscription (Canada) | Sharpe, Christopher | Canada | Violence |
| Refugees (Italy) | Frizzera, Francesco | Italy | Violence |
| Religion (Portugal) | Moura, Maria Lúcia de Brito | Portugal | Home Front, Power, Violence |
| Resistance and Rebellions (Africa) | Moyd, Michelle | Africa | Power |
| Revolutions (East Central Europe) | Brudek, Paweł | Estonia, Finland, Latvia, Lithuania, Poland | Power |
| 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 (Canada) | Iarocci, Andrew | Canada | Home Front |
| Science and Technology (Italy) | Scartabellati, Andrea and Ratti, Felicita | Italy | Home Front |
| Science and Technology (Ottoman Empire/Middle East) | Williams, Elizabeth | Ottoman Empire | Home Front |
| Sepoy Letters (India) | Omissi, David | India | Home Front |
| Serbia | Bjelajac, Mile | Serbia | Home Front, Post-war, Power, Pre-war, Violence |
| Siam | Hell, Stefan | Siam | Home Front, Post-war, Power, Violence |
| Social Conflict and Control, Protest and Repression (Italy) | Bianchi, Roberto | Italy | 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 |
| Soldier Newspapers | Nelson, Robert L. | France, Germany, Great Britain | Media |
| 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 |
| Tactics, Army (Austria-Hungary) | Ortner, M. Christian | Austria-Hungary | Violence |
| Teskilat-i Mahsusa (Ottoman Empire) | Moreau, Odile | Ottoman Empire | Power |
| The Home Front (Newfoundland) | Bishop Stirling, Terry | Newfoundland | Home Front |
| The Military at Home | Roynette, Odile | Austria-Hungary, France, Germany, Great Britain, Russian Empire, USA | Home Front |
| The Military Collapse of the Central Powers | Tunstall, Graydon A. | Austria, Czechoslovakia, Germany, Hungary, Italy, Ottoman Empire | Violence |
| 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 |
| 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) | van Tuyll, Hubert | Belgium | Power |
| War Aims and War Aims Discussions (Great Britain and Ireland) | Millman, Brock | Great Britain and Ireland | 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 Correspondents | Luckhurst, Tim | France, Germany, Great Britain, USA | Media |
| Warfare 1914-1918 | Philpott, William | Austria-Hungary, France, Germany, Great Britain, Italy, Russian Empire, USA | Violence |
| Warfare 1914-1918 (Australia) | Westerman, William | Australia | Violence |
| Warfare 1914-1918 (Belgium) | Simoens, Tom | Belgium | Violence |
| Warfare 1914-1918 (Canada) | Oliver, Dean F. | Canada | Violence |
| Warfare 1914-1918 (East Central Europe) | Szlanta, Piotr and Richter, Klaus | Estonia, Finland, Latvia, Lithuania, Poland | Violence |
| Warfare 1914-1918 (Germany) | Pöhlmann, Markus | Germany | Violence |
| Warfare 1914-1918 (Great Britain and Ireland) | Searle, Alaric | Great Britain and Ireland | Violence |
| Warfare 1914-1918 (Italy) | Cappellano, Filippo | Italy | Violence |
| Warfare 1914-1918 (Japan) | Melzer, Jürgen | Japan | Violence |
| Warfare 1914-1918 (Newfoundland) | Baker, Melvin | Newfoundland | Violence |
| Warfare 1914-1918 (New Zealand) | Fox, Aaron Patrick | New Zealand | 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 in the Balkans | Hall, Richard C. | Albania, Bulgaria, Greece, Montenegro, Ottoman Empire, Romania, Serbia | Violence |
| War Letters: Communication between Front and Home Front | Hanna, Martha | Australia, Austria-Hungary, Canada, France, Germany, Great Britain, New Zealand, Russian Empire | Home Front |
| War Letters (Italy) | Stiaccini, Carlo | Italy | Home Front |
| War Losses (Africa) | Lunn, Joe Harris | East and Central Africa, Northern Africa, Southern Africa, Union of South Africa, West Africa | Violence |
| War Losses (Australia) | Noonan, David C. | Australia | Violence |
| War Losses (Canada) | Cook, Tim and Stewart, William | Canada | Violence |
| War Losses (Germany) | Whalen, Robert Weldon | Germany | Violence |
| War Losses (Italy) | Scolè, Pierluigi | Italy | Violence |
| War Losses (Ottoman Empire/Middle East) | Baş, Mehmet Fatih | Ottoman Empire | Violence |
| War Losses (Portugal) | Tavares, João Moreira | Portugal | Violence |
| War Losses (USA) | Byerly, Carol R. | USA | Violence |
| Wartime and Post-war Economies (Japan) | Schiltz, Michael | Japan | Home Front, Post-war |
| Weapons | Audoin-Rouzeau, Stéphane | France, Germany, Great Britain | Violence |
| West Africa | Njung, George N. | West Africa | Power, Pre-war, Violence |
| Western Front | Krause, Jonathan | France, Germany, Great Britain | Violence |
| Women’s Mobilisation for War (Australia) | Frances, Rae | Australia | Home Front |
| Women's Mobilization for War (South East Europe) | Mladenović, Božica | Bulgaria, Montenegro, Romania, Serbia | Home Front |
| Xenophobia | Brodie, Thomas | Austria-Hungary, Germany, Great Britain, Japan, Ottoman Empire, Poland, USA | Power |
| Yugoslavia | Trgovčević, Ljubinka | Yugoslavia | Post-war, Power, Pre-war, Violence |
