Definitions for "Defilade"
1. Protection from hostile observation and fire provided by an obstacle such as a hill, ridge, or bank. 2. A vertical distance by which a position is concealed from enemy observation. 3. To shield from enemy fire or observation by using natural or artificial obstacles.
the arrangement of defensive fortifications to protect against enemy fire
a depression or other shallow land feature that prevents direct fire from a prepared position, like a ditch or culvert
To raise, as a rampart, so as to shelter interior works commanded from some higher point.
Keywords:  terrain, maneuvering, cover
Maneuvering to obtain cover from terrain