DISMANTLE v.
To strip of furniture and equipments, guns, etc.; to unrig; to strip of walls or outworks; to break down; as, to dismantle a fort, a town, or a ship. A dismantled house, without windows or shutters to keep out the rain. Macaulay.
REDOUBT n. 2 definitions
A small, and usually a roughly constructed, fort or outwork of varying shape, commonly erected for a temporary purpose, and without flanking defenses, -- used esp. in fortifying tops of hills and passes, and positions in hostile territory.