Warrior, famously called "the horse the Germans couldn't kill," became a symbol of courage and loyalty during World War I.

Canadian troops stand ready to repel a German attack on the trenches. One soldier keeps a look out using a periscope to see over edge of the trench. Around 650,000 Canadian soldiers fought in WW1.

Photographed in 1917, an endless line of Russian soldiers sit patiently in a trench as they anticipate a German attack. National Geographic Nearby, on one of the tunnel walls, our headlamps ...

A new gravestone has been erected for a World War One soldier who died as a result of the after effects of a gas attack and ...

Researchers identified the soldier's regiment from a watch ... took the form of ferocious house-to-house combat, unlike the trench warfare which later became the norm. It is thought he had ...