Note:  Do not rely on this information. It is very old.


Entrenchments, a term of military engineering used to denote a set of defences and protections of a force, formed, as the name implies, by excavating the ground and serving both as an obstacle to the enemy's advance and. if necessary, as cover and protection for the defenders. When used as a covered approach to a place besieged, the excavations made are commonly called "trenches."