Subject
- Soldiers--Travel7
- Tactics7
- Aeronautics, Military6
- Armored vehicles, Military6
- Canada. Canadian Armed Forces6
- Communications, Military6
- Grids (Cartography)6
- Macgowan, Keith C. (Keith Campbell), 1890-19346
- Military bridges6
- Military campaigns6
- Military intelligence6
- Military railroads6
- Military roads6
- War--Songs and music6
- Battle of Ypres (2nd) (Ieper, Belgium : 1915)5
- Bombardment5
- Bridges5
- Cold War (1945-1989)5
- Gases, Asphyxiating and poisonous--War use5
- Great Britain. Royal Air Force5