Ardennes and warfare in world war one hi-res stock photography and images - Alamy

Were the trenches in World War 1 built before the war started, or during it? Did one side just stand by and let the others build them in their territory before battle?

German winter war 1944 hi-res stock photography and images - Alamy

Dead bodies wwi hi-res stock photography and images - Alamy

World war german soldiers relaxing hi-res stock photography and images - Alamy

World war i german soldiers hi-res stock photography and images - Alamy

American infantrymen hi-res stock photography and images - Alamy

Wwii battle of the bulge hi-res stock photography and images - Alamy

World War One Photos and Premium High Res Pictures - Getty Images

American red cross in ww1 hi-res stock photography and images - Alamy