Fausse-braye n. : A second raampart, exterior to, and parallel to, the main rampart, and considerably below its level.

Example:


Taxonomy
rampart, braye, enceinte, field fortifications, Fortification, civil war, siege, main ditch, attack, siege works, Dictionary, forts, fortress, entrenchments, entrenched, camps, mahan, dufour.

Defination from the web:
Fausse Braye. Also spelled Fauss-Bray and Fausse Braie, sometimes erroneously spelled False Bray. ... The position of the fausse braye between the rampart and main ditch inhibited the defense of the ditch from the main rampart and did not ...