The Hidden Offensive: WW1 Underground Army

This documentary uncovers the hidden underground war of the First World War, as soldiers turned to mine warfare when the trenches locked into stalemate. It follows the tunnellers who dug beneath enemy lines at places like Hill 60 to plant devastating explosives. It reveals a secret, claustrophobic front rarely told in mainstream history. It is a gripping watch about ingenuity, danger and the buried battles of the Western Front. Free to watch in HD on Dr Documentary.

Courtesy of Slice History on YouTube. Watch on YouTube ↗

More War Documentaries

United States of Secrets2021•1h 53m•HD•★8.820 Days in Mariupol2023•1h 34m•HD•★8.8Hitler's Reich: Diaries of Nazis and Victims2025•52m•HD•★8.6WWII in Colour: Overlord – D-Day2025•51m•HD•★8.6The Giant WW2 Factories Of The United States | War Factories2022•2h 49m•HD•★7.7World War II Wreckages Across the Globe | Drain the Oceans MEGA Episode | National Geographic2026•2h 21m•4K•★7.7A Teen Girl's Battle | Outlawed in Pakistan (full documentary) | FRONTLINE2025•54m•HD•★7.7Drone warriors - Autonomous weapon systems and the wars of the future | DW Documentary2026•44m•HD•★7.7How the Nazis Organised Genocide on an Unprecedented Scale - FD History2026•52m•HD•★8.2The Arabs Sack Rome2019•31m•HD•★8.0Top 10 Greatest Bomber Planes & Self Defence of All Time2023•1h 42m•HD•★8.0Uncovering the Hidden Tunnel of WWI's Bloodiest Battle2024•48m•HD•★8.0