Subject
- Geographical data[remove]8
- Military intelligence6
- Tribes6
- Historical geography4
- Imperialism3
- Military maps3
- Military operations3
- War casualties3
- Colonial administration2
- Gazetteers2
- Human settlements2
- Irrigation2
- Military communications2
- Agriculture1
- Cultivation1
- Marine navigation1
- Meteorological data1
- Military medicine1
- Water supply1