| Air Warfare | Mahoney, Ross and Pugh, James | France, Germany, Great Britain, Italy, Russian Empire | Violence |
| Air Warfare (Italy) | Caffarena, Fabio | Italy | Violence |
| Arms Race prior to 1914, Armament Policy | Brose, Eric | France, Germany, Great Britain, Ottoman Empire, Russian Empire | Pre-war |
| Australia | Beaumont, Joan | Australia | Home Front, Post-war, Power, Pre-war, Violence |
| Between Acceptance and Refusal - Soldiers' Attitudes Towards War (Great Britain and Ireland) | Meyer, Jessica | Great Britain and Ireland | Violence |
| Demobilization | Barry, Gearóid | Austria-Hungary, France, Germany, Great Britain, India, Ireland, Italy, Northern Africa, Poland, Russian Empire, USA | Post-war |
| East and Central Africa | Samson, Anne | East and Central Africa | Power, Violence |
| Health and Medicine (India) | Sehrawat, Samiksha | India | 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 |
| Labour, Labour Movements and Strikes (Ottoman Empire/ Middle East) | Thompson, Elizabeth and Akin, Yiğit | Ottoman Empire | Home Front |
| Making Sense of the War (Ottoman Empire/Middle East) | Minasidis, Charalampos | Ottoman Empire | Media |
| Maps, Geography and the Representation of Space | Schneider, Ute | Belgium, France, Germany, Great Britain | Media |
| 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 |
| 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 (Ottoman Empire/Middle East) | Pitts, Graham | Ottoman Empire | Home Front |
| Ottoman Empire/Middle East | Yanıkdağ, Yücel | Ottoman Empire | Home Front, Post-war, Power, Pre-war, Violence |
| Pre-war Military Planning | Seligmann, Matthew S. | Austria-Hungary, France, Germany, Great Britain and Ireland | Pre-war |
| Pre-war Military Planning (Australia) | Wilcox, Craig | Australia | Pre-war |
| Pre-war Military Planning (Austria-Hungary) | Kronenbitter, Günther | Austria | 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 (Russian Empire) | Sergeev, Evgenii Iur’evich | Russian Empire | Pre-war |
| Raw Materials | Chancerel, Pierre | Austria-Hungary, Brazil, Chile, China, France, Germany, Great Britain, India, Italy, Japan, Mexico, Russian Empire, USA | Home Front |
| Science and Technology | Johnson, Jeffrey | France, Germany, Great Britain, USA | Home Front |
| 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 (Australia) | Endacott, Eric | Australia | Home Front |
| Science and Technology (Canada) | Iarocci, Andrew | Canada | Home Front |
| Science and Technology (Germany) | Schwarz, Angela | Germany | Home Front |
| Science and Technology (Great Britain and Ireland) | Ford, Matthew | Great Britain | Home Front |
| Science and Technology (Italy) | Scartabellati, Andrea and Ratti, Felicita | Italy | Home Front |
| Science and Technology (Japan) | Kikuchi, Yoshiyuki | Japan | Home Front |
| Science and Technology (Portugal) | Assis, José Luís | Portugal | Home Front |
| Serbia | Bjelajac, Mile | Serbia | Home Front, Post-war, Power, Pre-war, Violence |
| 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 African Invasion of German South West Africa (Union of South Africa) | Kleynhans, Evert | Southern Africa, Union of South Africa | Violence |
| The Military at Home | Roynette, Odile | Austria-Hungary, France, Germany, Great Britain, Russian Empire, USA | Home Front |
| Transportation and Logistics | Brown, Ian M. | France, Germany, Great Britain, Iraq, Ottoman Empire, Persia/Iran | Home Front |
| 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 (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 (Italy) | Cappellano, Filippo | Italy | Violence |
| Warfare 1914-1918 (Japan) | Melzer, Jürgen | Japan | Violence |
| Warfare 1914-1918 (New Zealand) | Fox, Aaron Patrick | New Zealand | 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 |
| Weapons | Audoin-Rouzeau, Stéphane | France, Germany, Great Britain | Violence |
| Western Front | Krause, Jonathan | France, Germany, Great Britain | Violence |
