Question: 179th Tunnelling Company is known for firing the Lochnagar mine during this battle which was a part of what war?
Sentence (from "179th Tunnelling Company"): The tunnelling units were occupied in offensive and defensive mining involving the placing and maintaining of mines under enemy lines, as well as other underground work such as the construction of deep dugouts for troop accommodation, the digging of subways, saps (a narrow trench dug to approach enemy trenches), cable trenches and underground chambers for signals and medical services.
Relevant evidence: No