Subject
- Battles11
- First World War (1914-1918)11
- River navigation11
- Colonial administration10
- First World War in Mesopotamia (1914-1918)10
- Biographies8
- Food supply8
- Geographical data8
- Malleson Mission (1918-1919)8
- Military deployment8
- Political intelligence8
- Roads8
- Surveys8
- Telegraph lines8
- Administration7
- Imperialism7
- Irrigation7
- Military expenditure7
- War casualties7
- Armed forces6