Epaulement n. (Fort.) A side work, made of gabions, fascines, or bags, filled with earth, or of earth heaped up, to afford cover from the flanking fire of an enemy.
... and occupied the end of the street behind the piece of ordnance. The soldiers were tearing up the pavement and constructing with the stones a small, low wall, a sort of side-work not more than eighteen inches high, and facing the barricade. In the angle at the left of this epaulement, there was visible the head of the column of a battalion from the suburbs ... — Les Miserables - Complete in Five Volumes • Victor Hugo