Warfare

Sap

A narrow trench or tunnel dug forward from a front line toward the enemy. The soldiers who dug them were called sappers, and the name came to mean Royal Engineers generally.

Mentioned in

• Chapter V The Year of Attrition §7 Brusilov's Storm, and Italy's Mountains
• Chapter IX In the Trenches §1 Anatomy of a Trench System§3 No Man's Land: Patrols, Raids and Wiring Parties