This is the first part of a planned four-volume series focusing on a hitherto largely neglected aspect of the Great War on the Western Front
- the war underground. The subject has fascinated visitors to the battlefields from the very beginning of battlefield pilgrimages in the years immediately after the Armistice & locations such as Hill 60 & the Grange Subway at Vimy have always been popular stops on such tours. Three other volumes will follow covering the Somme Ypres & French Flanders. Each book in the series has a short description of the formation & development of Tunneling Companies in the BEF & a glossary of technical terms.