| Atrocities | Kramer, Alan | Austria, Belgium, France, Germany, Great Britain, Ottoman Empire, Serbia, Ukraine | Violence |
| Colonial Warfare and Occupation (Africa) | Digre, Brian | East and Central Africa, Southern Africa, Union of South Africa, West Africa | Post-war, Power |
| Destruction of the Ecosystem | Keller, Tait | Belgium, Canada, France, Germany, Indonesia, Mexico, USA | Violence |
| Disease and Public Health (Ottoman Empire/Middle East) | Schulze-Tanielian, Melanie | Ottoman Empire | Home Front |
| Disease and Public Health (Portugal) | Garnel, Rita | Portugal | Home Front |
| East and Central Africa | Samson, Anne | East and Central Africa | Power, Violence |
| Health and Medicine (India) | Sehrawat, Samiksha | India | Home Front |
| Influenza Pandemic | Phillips, Howard | Africa, Australasia, Central Europe, East Asia, Eastern Europe, Latin America, Middle East, North America, South East Europe, South and South East Asia, Western Europe | Post-war |
| Mutilation and Disfiguration | Anderson, Julie | Australia, Canada, France, Germany, Great Britain, New Zealand, USA | Violence |
| 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 |
| Prisoners of War | Jones, Heather | Austria-Hungary, Bulgaria, France, Germany, Great Britain, Italy, Ottoman Empire, Russian Empire, Serbia | Violence |
| Prisoners of War (Australia) | Pegram, Aaron | Australia | Violence |
| Prisoners of War (Belgium and France) | Jones, Heather | Belgium, France | Violence |
| Prisoners of War (Italy) | Gorgolini, Luca | Italy | Violence |
| Prisoners of War (Ottoman Empire/Middle East) | Yanıkdağ, Yücel | Ottoman Empire | Violence |
| Prostitution (Ottoman Empire) | Oğuz, Çiğdem | Ottoman Empire | Home Front |
| Southern Africa | Storey Kelleher, William | Southern Africa | Home Front, Power, Pre-war, Violence |
| 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 |
| The Military Collapse of the Central Powers | Tunstall, Graydon A. | Austria, Czechoslovakia, Germany, Hungary, Italy, Ottoman Empire | Violence |
| Venereal Diseases | Steward, Journey and Wingfield, Nancy M. | Austria-Hungary, France, Germany, Great Britain, Russian Empire, USA | Home Front |
| Warfare 1914-1918 (South East Europe) | Tasić, Dmitar | Albania, Bulgaria, Montenegro, Romania, Serbia | Violence |
| War Losses | Prost, Antoine | Austria-Hungary, France, Germany, Great Britain, Ottoman Empire, Poland, Romania, Russian Empire, Serbia, USA | Violence |
| War Losses (Australia) | Noonan, David C. | Australia | Violence |
| War Losses (Belgium) | Majerus, Benoît | Belgium | Violence |
| War Losses (Canada) | Cook, Tim and Stewart, William | Canada | Violence |
| War Losses (France) | Lafon, Alexandre | France | Violence |
| War Losses (Germany) | Whalen, Robert Weldon | Germany | Violence |
| War Losses (Italy) | Scolè, Pierluigi | Italy | Violence |
| War Losses (USA) | Byerly, Carol R. | USA | Violence |
| Women's Mobilization for War (Italy) | Bartoloni, Stefania | Italy | Home Front |
| Women's Mobilization for War (New Zealand) | Hunter, Kate | New Zealand | Home Front |
| Women's Mobilization for War (South East Europe) | Mladenović, Božica | Bulgaria, Montenegro, Romania, Serbia | Home Front |
