Any good anagrams for traverses?

In fortifications, are mounds of earth, above the height of a man, and 18 feet thick, placed at frequent intervals on a rampart, to stop shot which may enfilade the face of such rampart. A fire of this nature, in the absence of traverses, would dismount the guns, and prove altogether ruinous. The traverses also give means of disputing the progress of an assailant who has gained a footing on the wall, for each traverse becomes a defensible parapet, only to be taken by storm.

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