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The ''cheval de frise'' (plural: ''chevaux de frise'' , "
Frisia Frisia is a cross-border cultural region in Northwestern Europe. Stretching along the Wadden Sea, it encompasses the north of the Netherlands and parts of northwestern Germany. The region is traditionally inhabited by the Frisians, a West Ger ...
n
horses The horse (''Equus ferus caballus'') is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of ''Equus ferus''. The horse has evolved over the past 45 to 55 million yea ...
") is a defensive obstacle, which existed in a number of forms and were employed in various applications. These included underwater constructions used to prevent the passage of ships or other vessels on rivers, or as anti-cavalry measure consisting of a portable frame (sometimes just a simple log) covered with many projecting long iron or wooden spikes or spears. They were principally intended as an anti-
cavalry Historically, cavalry (from the French word ''cavalerie'', itself derived from "cheval" meaning "horse") are soldiers or warriors who fight mounted on horseback. Cavalry were the most mobile of the combat arms, operating as light cavalry in ...
obstacle but could also be moved quickly to help block a breach in another barrier. They remained in occasional use until they were replaced by
wire obstacle In the military science of fortification, wire obstacles are defensive obstacles made from barbed wire, barbed tape or concertina wire. They are designed to disrupt, delay and generally slow down an attacking enemy. During the time that the atta ...
s just after the American Civil War. During the Civil War, the Confederates used this type of barrier more often than the
Union forces Union commonly refers to: * Trade union, an organization of workers * Union (set theory), in mathematics, a fundamental operation on sets Union may also refer to: Arts and entertainment Music * Union (band), an American rock group ** ''Un ...
. During World War I, armies used ''chevaux de frise'' to temporarily plug gaps in barbed wire. Barbed wire ''chevaux de frise'' were used in jungle fighting on the South Pacific islands during World War II. The term is also applied to defensive works on buildings. This includes a series of closely set upright stones found outside the ramparts of
Iron Age The Iron Age is the final epoch of the three-age division of the prehistory and protohistory of humanity. It was preceded by the Stone Age (Paleolithic, Mesolithic, Neolithic) and the Bronze Age ( Chalcolithic). The concept has been mostly ap ...
hillfort A hillfort is a type of earthwork used as a fortified refuge or defended settlement, located to exploit a rise in elevation for defensive advantage. They are typically European and of the Bronze Age or Iron Age. Some were used in the post-Rom ...
s in northern Europe, or iron spikes outside homes in
Charleston, South Carolina Charleston is the largest city in the U.S. state of South Carolina, the county seat of Charleston County, and the principal city in the Charleston–North Charleston metropolitan area. The city lies just south of the geographical midpoint ...
.


Etymology

In French, ''cheval de frise'' means "
Frisia Frisia is a cross-border cultural region in Northwestern Europe. Stretching along the Wadden Sea, it encompasses the north of the Netherlands and parts of northwestern Germany. The region is traditionally inhabited by the Frisians, a West Ger ...
n horse". The
Frisia Frisia is a cross-border cultural region in Northwestern Europe. Stretching along the Wadden Sea, it encompasses the north of the Netherlands and parts of northwestern Germany. The region is traditionally inhabited by the Frisians, a West Ger ...
ns fought predominantly using cavalry; they were known for being formidable horsemen, and Frisian horses were renowned for their strength and agility. Therefore, for defense they relied heavily on anti-cavalry obstacles. The Dutch also adopted the use of these defensive devices when at war with Spain. The term ''cheval de frise'' came to be used for any spiked obstacle, such as broken glass embedded in mortar at the top of a wall. The ''cheval de frise'' was adopted in New York and Pennsylvania during the
American Revolutionary War The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of t ...
as a defensive measure installed on rivers to prevent upriver movement by enemy ships. During the Peninsular War, at the siege of Badajoz in 1812, a ''cheval de frise'' was successfully deployed to fill a breach in the town wall, allowing the French to inflict heavy casualties on the British storm troops.


American Revolutionary War

During the
American Revolutionary War The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of t ...
both Thaddeus Kosciuszko and
Robert Erskine Robert Erskine (1735–1780) was a Scottish inventor and engineer who came to the British colonial Province of New Jersey in 1771 to run the ironworks at Ringwood, New Jersey. He subsequently became sympathetic to the movement for independenc ...
designed an anti-ship version of the cheval-de-frise to prevent British warships from proceeding up the
Delaware River The Delaware River is a major river in the Mid-Atlantic region of the United States. From the meeting of its branches in Hancock, New York, the river flows for along the borders of New York, Pennsylvania, New Jersey, and Delaware, before em ...
and
Hudson River The Hudson River is a river that flows from north to south primarily through eastern New York. It originates in the Adirondack Mountains of Upstate New York and flows southward through the Hudson Valley to the New York Harbor between New ...
, respectively. A ''cheval de frise'' by Erskine's design was placed between Fort Washington at northern Manhattan and Fort Lee in New Jersey in 1776. The following year construction began on one to the north of
West Point The United States Military Academy (USMA), also known Metonymy, metonymically as West Point or simply as Army, is a United States service academies, United States service academy in West Point, New York. It was originally established as a f ...
at
Pollepel Island Pollepel Island is a uninhabited island in the Hudson River in New York. The principal feature on the island is Bannerman's Castle, an abandoned military surplus warehouse. Description Pollepel Island has been called many different names, incl ...
, but it was overshadowed by the completion of the Great Chain across the Hudson in 1778, which was used through 1782. Similar devices planned by
Ben Franklin Benjamin Franklin ( April 17, 1790) was an American polymath who was active as a writer, scientist, inventor, statesman, diplomat, printer, publisher, and political philosopher. Encyclopædia Britannica, Wood, 2021 Among the leading intel ...
and designed by Robert Smith were used in the
Delaware River The Delaware River is a major river in the Mid-Atlantic region of the United States. From the meeting of its branches in Hancock, New York, the river flows for along the borders of New York, Pennsylvania, New Jersey, and Delaware, before em ...
near
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...
, between
Fort Mifflin Fort Mifflin, originally called Fort Island Battery and also known as Mud Island Fort, was commissioned in 1771 and sits on Mud Island (or Deep Water Island) on the Delaware River below Philadelphia, Pennsylvania near Philadelphia International A ...
and
Fort Mercer Fort Mercer was a earthen fort on the Delaware River on its New Jersey shore constructed by the Continental Army during the American Revolutionary War. Built by Polish engineer Thaddeus Kosciuszko under the command of George Washington, Fort M ...
. Two other lines of chevaux-de-frise were also placed across the Delaware River at
Marcus Hook, Pennsylvania Marcus Hook is a borough in Delaware County, Pennsylvania. The population was 2,397 at the 2010 census. The current mayor is Gene Taylor. The borough calls itself "The Cornerstone of Pennsylvania". The 2005 film ''One Last Thing''... was set an ...
and
Fort Billingsport Fort Billingsport (Fort Billings in some sources), at Billingsport in Paulsboro, Gloucester County, New Jersey, United States, was an American Revolutionary War fort on the Delaware River. The site of the fort is now a public park of the same n ...
, New Jersey as a first line of defense for Philadelphia against the British naval forces. A ''cheval de frise'' was retrieved from the Delaware River in Philadelphia on November 13, 2007, in excellent condition, after more than two centuries in the river. In November 2012, a spike from a cheval-de-frise was recovered from Delaware off Bristol Township; it was also believed to be from the Revolutionary era installation at Philadelphia and freed up by
Hurricane Sandy Hurricane Sandy (unofficially referred to as ''Superstorm Sandy'') was an extremely destructive and strong Atlantic hurricane, as well as the largest Atlantic hurricane on record as measured by diameter, with tropical-storm-force winds spann ...
earlier that fall.


Legacy

A small promontory on the north-east
Essex Essex () is a county in the East of England. One of the home counties, it borders Suffolk and Cambridgeshire to the north, the North Sea to the east, Hertfordshire to the west, Kent across the estuary of the River Thames to the south, and Gr ...
coast in the United Kingdom (UK), between Holland Haven and
Frinton-on-Sea Frinton-on-Sea is a seaside town and (as just Frinton) a former civil parish, now in the parish of Frinton and Walton, in the Tendring district of Essex, England. In 2018 it had an estimated population of 4,837. In 1931 the parish had a popula ...
, was named Chevaux de Frise Point.


See also

*
Czech hedgehog The Czech hedgehog ( cs, rozsocháč or ') is a static anti-tank obstacle defense made of metal angle beams or I-beams (that is, lengths with an L- or Ɪ-shaped cross section). The hedgehog is very effective in keeping light to medium tanks and ...


References

{{Fortifications Fortification (obstacles) Medieval defences