Dymchurch Grand Redoubt is a

fortification 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 Lati ...

Palmarsh Palmarsh is a community (OS grid reference TR1333) in Folkestone and Hythe (District), Folkestone and Hythe district, in the County of Kent, England. In origin it was a hamlet on the edge of the Romney Marsh, but modern development to the west of ...

on the coast of

Kent Kent is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Essex across the Thames Estuary to the north, the Strait of Dover to the south-east, East Sussex to the south-west, Surrey to the west, and Gr ...

in England, built during the

Napoleonic War {{Infobox military conflict , conflict = Napoleonic Wars , partof = the French Revolutionary and Napoleonic Wars , image = Napoleonic Wars (revision).jpg , caption = Left to right, top to bottom:Battl ...

as part of a large defensive scheme to protect the country from an expected French invasion.

Description

Dymchurch Dymchurch is a village and civil parish in the Folkestone and Hythe district of Kent, England. The village is located on the coast five miles (8 km) south-west of Hythe, and on the Romney Marsh. History The history of Dymchurch began w ...

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 ...

is circular in form and built of brick with

granite Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly coo ...

and

sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...

dressings. It measures up to 68 metres in diameter and stands 12 metres above the floor of its 9-metre-wide

ditch A ditch is a small to moderate trench created to channel water. A ditch can be used for drainage, to drain water from low-lying areas, alongside roadways or fields, or to channel water from a more distant source for plant irrigation. Ditches ...

or dry

moat A moat is a deep, broad ditch dug around a castle, fortification, building, or town, historically to provide it with a preliminary line of defence. Moats can be dry or filled with water. In some places, moats evolved into more extensive water d ...

. It lacks the

caponier A caponier is a type of defensive structure in a fortification. Fire from this point could cover the ditch beyond the curtain wall (fortification), curtain wall to deter any attempt to storm the wall. The word originates from the French ', meaning ...

s or musketry galleries of the otherwise similar

Eastbourne Redoubt Eastbourne Redoubt is a circular coastal defence fort at Eastbourne, East Sussex, on the south coast of England. It was built in 1805 as part of the British anti-invasion preparations during the Napoleonic Wars. The building is now owned by t ...

. Beyond the moat, an earth bank or

glacis A glacis (, ) in military engineering is an artificial slope as part of a medieval castle or in early modern fortresses. They may be constructed of earth as a temporary structure or of stone in more permanent structure. More generally, a glaci ...

helped to protect the masonry from artillery fire. Built on two stories, the upper floor had open emplacements for ten 24 pounder guns mounted on wooden traversing platforms. The lower floor featured twenty-four vaulted barrack and storage

casemates A casemate is a fortified gun emplacement or armoured structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary When referring to antiquity, the term "casemate wall" mea ...

that opened onto a circular parade ground. They were designed to accommodate 350 officers and men. Entry was originally via a wooden footbridge supported by stilts, which could be collapsed in an emergency.

History

The design and purpose of the redoubt were finalised at a conference in Rochester in 1804. It was built between 1804 and 1812 to support a chain of 21

Martello Towers Martello towers are small defensive forts that were built across the British Empire during the 19th century, from the time of the French Revolutionary Wars onwards. Most were coastal forts. They stand up to high (with two floors) and typica ...

that stretched between Hythe in Kent and

Rye Rye (''Secale cereale'') is a grass grown extensively as a grain, a cover crop and a forage crop. It is grown principally in an area from Eastern and Northern Europe into Russia. It is much more tolerant of cold weather and poor soil than o ...

Sussex Sussex (Help:IPA/English, /ˈsʌsɪks/; from the Old English ''Sūþseaxe''; lit. 'South Saxons'; 'Sussex') is an area within South East England that was historically a kingdom of Sussex, kingdom and, later, a Historic counties of England, ...

, and to act as a supply depot for them. It specifically protected the sluices that were the key to the drainage of

Romney Marsh Romney Marsh is a sparsely populated wetland area in the counties of Kent and East Sussex in the south-east of England. It covers about . The Marsh has been in use for centuries, though its inhabitants commonly suffered from malaria until the ...

. By the time it was finished, the invasion threat was over. During

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

, it was used for troop accommodation, although there was a question in Parliament about the damp conditions. In

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, the south coast was again at risk of invasion, and two 6 inch breech-loading guns were mounted in casemates built over the original gun emplacements. A prominent battery observation post was built and pillboxes were sited on the parapet in order to repel an infantry attack. It was fully operational by 1942 as an Emergency Coastal Battery. After the war, the observation post was used as a

Coastguard A coast guard or coastguard is a maritime security organization of a particular country. The term embraces wide range of responsibilities in different countries, from being a heavily armed military force with customs and security duties to ...

lookout and radar was installed to monitor shipping in the

English Channel The English Channel, also known as the Channel, is an arm of the Atlantic Ocean that separates Southern England from northern France. It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busi ...

. The army constructed a mock-up of a street of buildings in the interior, for training in

urban warfare Urban warfare is warfare in urban areas such as towns and cities. Urban combat differs from combat in the open at both Military operation, operational and the Military tactics, tactical levels. Complicating factors in urban warfare include the p ...

. The redoubt remains the property of the

Ministry of Defence A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...

. It is a

Scheduled Monument In the United Kingdom, a scheduled monument is a nationally important archaeological site or historic building, given protection against unauthorised change. The various pieces of legislation that legally protect heritage assets from damage, visu ...

and is listed by

English Heritage English Heritage (officially the English Heritage Trust) is a charity that manages over 400 historic monuments, buildings and places. These include prehistoric sites, a battlefield, medieval castles, Roman forts, historic industrial sites, Lis ...

as a Building at Risk, although a conservation plan has been agreed.
/ref>

Location

The Dymchurch Redoubt is located on the south (seaward) side of the A259 road, A259 main road roughly halfway between the village of

and the town of Hythe. It is located on the edge of the

community, and about two miles from Dymchurch, whose name it bears. It is not open to the public, but walking along the sea wall allows a close approach on the south side. Further access may be restricted when there is firing on Hythe Ranges. When the ranges are in use, prominent red flags are flown, supplemented by red lights during night firing practice. Due to the risk of

ricochet A ricochet ( ; ) is a rebound, bounce, or skip off a surface, particularly in the case of a projectile. Most ricochets are caused by accident and while the force of the deflection decelerates the projectile, it can still be energetic and almost ...

during firing, a Range Safety Boat is present to prevent boats entering the danger area.

References

{{Redoubts Forts in Kent

Redoubts British Defence Forces

Description

History

Location

See also

References