World war one trenches at Ypres Belgium Stock Photo - Alamy

Download this stock image: World war one trenches at Ypres Belgium - A4WW28 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.

Old trench line hi-res stock photography and images - Page 3 - Alamy

60+ Ww1 Trenches Sanctuary Wood Ypres Belgium Stock Photos, Pictures & Royalty-Free Images - iStock

World war one trenches at Ypres Belgium Stock Photo - Alamy

60+ Ww1 Trenches Sanctuary Wood Ypres Belgium Stock Photos, Pictures & Royalty-Free Images - iStock

World war one trenches at Ypres Belgium Stock Photo - Alamy

First World War restored trenches at Sanctuary Wood, Hill 62 near Ypres, Flanders, Belgium Stock Photo - 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?

Part of the system of World War One trenches at Sanctuary Wood near Ypres in Belgium Stock Photo - Alamy

British World War Trenches At Hill 62 Sanctuary Wood On The, 53% OFF