Save guides, add subjects and pick up where you left off with your BBC account. The trenches systems were on every front of World War One. A front is a stretch of land where warring countries ...

By 1918, 40,000 of them had lost their lives - many of them in the trench warfare on the Western Front, Matt Murray, Sachin Krishnan and Tomos Dafydd report. World War One: Life In The Trenches.