Subject
- Military intelligence102
- Military logistics82
- Military supplies73
- Military administration55
- Military personnel31
- Military operations26
- Railway construction25
- Railways25
- Reports20
- Military occupation16
- Shipping15
- Tribes15
- Prisoners of War14
- Demobilisation13
- Gazetteers12
- Military communications12
- Military strategy12
- Battles11
- Bolshevism11
- Military equipment11