The Ridge Must Not Fall: The Secret War Beneath Messines, 1917

After two years of disaster, a battle that changed everything.
In the early hours of 7 June 1917, the quiet beneath Messines Ridge gave way to cataclysm. For months, British and Commonwealth tunnellers had waged a secret war underground, driving deep galleries beneath the German front line. Their objective was to break one of the strongest positions on the Western Front and restore momentum to an army stalled by years of costly failure.
When nineteen vast mines detonated at dawn, the ridge er...