Subject
- Military intelligence[remove]180
- Military logistics37
- Military supplies34
- Reports27
- Military operations12
- Railways11
- Bolshevism10
- First World War (1914-1918)10
- Railway construction10
- Tribes10
- Military communications9
- Second World War (1939-1945)8
- Surveys8
- Military occupation7
- Military strategy7
- Political intelligence7
- Armed forces6
- Food supply6
- Geographical data6
- Geography6