This fascinating series unearths the story about how the Great War went on underground.
The story of how a unique British tunnelling technique developed for the mud of Flanders was employed to win the strategic ground during the gruesome trench warfare of the Ypres Salient.
Battle Castle Series
You can find a full index and overview of The Great Underground War here.
Production & Filming Details
- Release Date: 10 August 2014.
- Running Time: 45 minutes.
- Rating: Unknown.
- Country: UK.
- Language: English and German.