Subjects
5 Articles
| Air Warfare (Italy) | Caffarena, Fabio | Italy | Violence |
| Children and Youth: Ottoman Empire (Ottoman Empire/Middle East) | Maksudyan, Nazan | Ottoman Empire | Home Front |
| Siam | Hell, Stefan | Siam | Home Front, Post-war, Power, Violence |
| Warfare 1914-1918 (Newfoundland) | Baker, Melvin | Newfoundland | Violence |
| War Losses (USA) | Byerly, Carol R. | USA | Violence |
14 Articles
Regions
| Baltenregiment | Centek, Jarosław | Estonia | Violence |
| Bauer, Otto | Beneš, Jakub | Austria | Power |
| Camouflage | Coutin, Cécile | Belgium, France, Germany, Great Britain, Italy, USA | Violence |
| Carrier Corps | Murphy, Mahon | East and Central Africa | Violence |
| Cossacks | Peeling, Siobhan | Russian Empire | Post-war |
| Foulois, Benjamin | Kennedy, Douglas | USA | Violence |
| Garde Civique | Veldeman, Piet | Belgium | Violence |
| Kostiuchnówka, Battle of | Brudek, Paweł | Poland | Violence |
| Latvian Riflemen | Jēkabsons, Ēriks | Latvia | Violence |
| Rationing (USA) | Shafer, Robert | USA | Home Front |
| Red Army | Gilley, Christopher | Russian Empire | Post-war |
| Selective Service Act | Geheran, Michael | USA | Power |
| Soldiers on Leave | Cronier, Emmanuelle | France, Germany, Great Britain | Violence |
| Turkestan | Drieu, Cloé | Turkestan | Power, Violence |
