A gorge in field fortification is the "unexposed side of a fieldwork", typically the rear of an independent

fieldwork Field research, field studies, or fieldwork is the collection of raw data outside a laboratory, library, or workplace setting. The approaches and methods used in field research vary across disciplines. For example, biologists who conduct f ...

or detached

outwork An outwork is a minor fortification built or established outside the principal fortification limits, detached or semidetached. Outworks such as ravelins, lunettes (demilunes), flèches and caponier A caponier is a type of defensive structur ...

in front of the main

fortress A fortification (also called a fort, fortress, fastness, or stronghold) is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from L ...

or defensive position.

Outworks with open gorges

Straith describes three commonly used classes of field work: "works open at the gorge, works enclosed all round and lines." He lists the following as works open at the gorge: *

Redan Redan (a French language, French word for "projection", "salient") is a feature of fortifications. It is a work in a V-shaped Salients, re-entrants and pockets, salient angle towards an expected attack. It can be made from earthworks or other ...

Lunette A lunette (French ''lunette'', 'little moon') is a crescent- or half-moon–shaped or semi-circular architectural space or feature, variously filled with sculpture, painted, glazed, filled with recessed masonry, or void. A lunette may also be ...

* Redan with flanks * Double Redan *

Tenaille A tenaille (archaic tenalia) is an advanced defensive-work, in front of the main defences of a fortress, which takes its name from resemblance to the lip of a pair of pincers. It is "from French, literally: tongs, from Late Latin tenācula, pl ...

-head *

Bastion A bastion is a structure projecting outward from the curtain wall of a fortification, most commonly angular in shape and positioned at the corners of the fort. The fully developed bastion consists of two faces and two flanks, with fire from the ...

-head Closed works are the

redoubt A redoubt (historically redout) is a Fortification, fort or fort system usually consisting of an enclosed defensive emplacement outside a larger fort, usually relying on Earthworks (engineering), earthworks, although some are constructed of ston ...

star fort A bastion fort or ''trace italienne'' (a phrase derived from non-standard French, meaning 'Italian outline') is a fortification in a style developed during the early modern period in response to the ascendancy of gunpowder weapons such as c ...

and

bastion A bastion is a structure projecting outward from the curtain wall of a fortification, most commonly angular in shape and positioned at the corners of the fort. The fully developed bastion consists of two faces and two flanks, with fire from the ...

ed fort. Gorges of 'half-closed works' were usually closed either by a parapet or stockade.

References

Literature

* * * {{Fortifications Fortification (architectural elements)