[Gutenberg 46757] • Fighting the Boche Underground

Excerpt from Fighting the Boche Underground

The value of mines and of similar contrivances of the engineer is partly psychological. Though hundreds of men only may be put out of action by their use, thousands of valuable fighting men suffer mentally from the knowledge or from the mere suspicion that their trenches are undermined by the enemy. Such a suspicion causes the strain on their morale to be very severe and their usefulness to be correspondingly diminished.

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