Is The Great Underground War coming back?
The Great Underground War (2014–2014) — war · history on Prime Video
The answer: Concluded June 27, 2014.
Watch on Prime Video 
1season
5episodes
About The Great Underground War
A five-part series that explores the forgotten story of the incredible engineering feats and secret survival techniques of five legendary battles fought underground during World War I.
The Great Underground War episode schedule
5 aired
Aired · 5
| Date | Ep. | Title |
|---|---|---|
| June 27, 2014 | S1·E5 | Monte Paterno |
| June 27, 2014 | S1·E4 | Col di Lana |
| June 27, 2014 | S1·E3 | Vauquois, Hill of Death |
| June 27, 2014 | S1·E2 | The Mines of Ypres |
| June 27, 2014 | S1·E1 | The Secret of the Somme |