Episode guide
Series 1
The Underground War
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Underground War
During World War I, a barbaric battle was fought deep under the trenches in mazes and dugouts. Will a hi-tech search for one of these chambers in Flanders yield success? Find out.
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Underground War
Deep beneath the cornfields of Flanders lies one of the last Allied dugouts from World War I. Can archaeologists trace it? The second half of this two-parter reveals what they find.
Not scheduledNot scheduled