Subject
- Battlefields[remove]72
- World War (1914-1918)68
- Soldiers46
- Intrenchments23
- Trenches22
- Artillery16
- War--Medical aspects13
- War--Relief of sick and wounded13
- Battles11
- Military weapons10
- Fortification9
- Transportation, Military9
- Buildings--War damage8
- War casualties7
- Animals--War use5
- Litters5
- Buildings--Blast effects4
- Canada. Canadian Army4
- Armed Forces3
- Armored vehicles, Military3
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