What does counterscarp mean?
A counterscarp is the outer slope or wall of a ditch surrounding a fortified position such as a bastion fort or castle. In classical military architecture, a wide dry or wet ditch separated the fortress walls from the open ground, and each side of that ditch was given a carefully engineered profile: the inner slope rising toward the defenders was called the escarp, while the counterscarp formed the outer edge, descending from ground level into the ditch on the attacker's side. Its purpose was to present a steep, often masonry-faced obstacle that made it difficult for besiegers to cross the ditch, dig mines beneath it, or bring siege equipment close to the walls. The word belongs to the specialized vocabulary of fortification, alongside terms like rampart, glacis, and bastion, and today appears chiefly in histories of warfare, archaeological reports, and guides to surviving star forts such as those designed by Sébastien Le Prestre de Vauban.
nounThe outer slope or wall of a defensive ditch in a fortification, rising from the ditch toward the open country on the side facing an attacker.
- The outer slope or retaining wall of a fortified ditch, on the side facing away from the defended position.
"The attackers paused at the edge of the moat, daunted by the sheer face of the counterscarp above them."
"Sappers crept along the bottom of the ditch under cover of the counterscarp."
"The tour guide pointed out how vegetation had overgrown the old counterscarp of the Vauban-era ramparts."
Regular plural; typically used when describing multiple fortifications or different sections of a defensive line.
"The engineers inspected the crumbling counterscarps along the entire enceinte."
In a star fort, the counterscarp is the only thing standing between a soldier in the ditch and the enemy beyond it — and it faces the wrong way for the people who built it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of counterscarp
Counterscarp derives from French contrescarpe, which was itself borrowed from Italian controscarpa, formed from contro- ('against, opposite') plus scarpa ('slope', also 'shoe'). The Italian scarpa gave English both scarp and escarpment, making these direct relatives of counterscarp. The term entered English in the late sixteenth or seventeenth century as European military engineers adopted Italian theories of trace italienne fortification, where precisely angled ditches and slopes became central to defensive design.
How counterscarp is actually used
A technical term of military architecture and fortification, now found mainly in historical writing, archaeology, and descriptions of preserved bastion forts. It is almost always used in its full form rather than shortened.
Easily confused with counterscarp
The escarp is the inner slope of the ditch rising toward the fortress itself, while the counterscarp is the outer slope on the far side, facing away from the defenders.