Salients, Re-entrants And Pockets
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A salient, also known as a bulge, is a
battlefield A battlefield, battleground, or field of battle is the location of a present or historic battle involving ground warfare. It is commonly understood to be limited to the point of contact between opposing forces, though battles may involve troops ...
feature that projects into enemy territory. The salient is surrounded by the enemy on multiple sides, making the troops occupying the salient vulnerable. The opponent's front line that borders a salient is referred to as a re-entrant – that is, an angle pointing inwards. A deep salient is vulnerable to being "pinched off" through the base, and this will result in a pocket in which the forces in the salient become isolated and without a
supply line Supply may refer to: *The amount of a resource that is available **Supply (economics), the amount of a product which is available to customers **Materiel, the goods and equipment for a military unit to fulfill its mission *Supply, as in confidenc ...
. On the other hand, a breakout of the forces within the salient through its tip can threaten the rear areas of the opposing forces outside it, leaving them open to an attack from behind.


Implementation

Salients can be formed in a number of ways. An attacker can produce a salient in the defender's line by either intentionally making a
pincer movement The pincer movement, or double envelopment, is a military maneuver in which forces simultaneously attack both flanks (sides) of an enemy formation. This classic maneuver holds an important foothold throughout the history of warfare. The pin ...
around the military flanks of a
strongpoint In military tactics, a strongpoint is a key point in a defensive fighting position which anchors the overall defense line. This may include redoubts, bunkers, pillboxes, trenches or fortresses, alone or in combination; the primary requirement is ...
, which becomes the tip of the salient, or by making a broad, frontal attack which is held up in the centre but advances on the flanks. An attacker would usually produce a salient in his own line by making a broad, frontal attack that is successful only in the center, which becomes the tip of the salient. A salient can also be formed if the attacking army feigns retreat, tricking the defending forces to chase them down, leading to the main army being on all sides in a pre-arranged ambush. In
trench warfare Trench warfare is a type of land warfare using occupied lines largely comprising military trenches, in which troops are well-protected from the enemy's small arms fire and are substantially sheltered from artillery. Trench warfare became a ...
, salients are distinctly defined by the opposing lines of trenches, and they were commonly formed by the failure of a broad frontal attack. The static nature of the trenches meant that forming a pocket was difficult, but the vulnerable nature of salients meant that they were often the focus of attrition battles.


Examples

*
American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States. It was fought between the Union ("the North") and the Confederacy ("the South"), the latter formed by states th ...
** On the second day of the Battle of Gettysburg, Union General
Daniel Sickles Daniel Edgar Sickles (October 20, 1819May 3, 1914) was an American politician, soldier, and diplomat. Born to a wealthy family in New York City, Sickles was involved in a number of scandals, most notably the 1859 homicide of his wife's lover, U. ...
moved his III Corps ahead of the main line of the
Union Army During the American Civil War, the Union Army, also known as the Federal Army and the Northern Army, referring to the United States Army, was the land force that fought to preserve the Union (American Civil War), Union of the collective U.S. st ...
without orders, causing him to be nearly cut off from the main army when the
Confederate Army The Confederate States Army, also called the Confederate Army or the Southern Army, was the military land force of the Confederate States of America (commonly referred to as the Confederacy) during the American Civil War (1861–1865), fighting ...
attacked. Sickles had held a similar position at Catherine's Furnace in the
Battle of Chancellorsville The Battle of Chancellorsville, April 30 – May 6, 1863, was a major battle of the American Civil War (1861–1865), and the principal engagement of the Chancellorsville campaign. Chancellorsville is known as Lee's "perfect battle" because h ...
two months earlier, and in both cases his corps was badly mauled and had to be rescued by other units. ** At the
Battle of Spotsylvania The Battle of Spotsylvania Court House, sometimes more simply referred to as the Battle of Spotsylvania (or the 19th-century spelling Spottsylvania), was the second major battle in Lt. Gen. Ulysses S. Grant and Maj. Gen. George G. Meade's 186 ...
, the Confederate
Army of Northern Virginia The Army of Northern Virginia was the primary military force of the Confederate States of America in the Eastern Theater of the American Civil War. It was also the primary command structure of the Department of Northern Virginia. It was most oft ...
arrived first at a strategic crossroads, and constructed a timber-reinforced line of trenches to stand against the numerically superior Union
Army of the Potomac The Army of the Potomac was the principal Union Army in the Eastern Theater of the American Civil War. It was created in July 1861 shortly after the First Battle of Bull Run and was disbanded in June 1865 following the surrender of the Confedera ...
. The trench line bulged forward to protect a piece of high ground, in a curve that became known as the Mule Shoe Salient. Union troops concentrated their attack on this point, broke through, and 22 hours of brutal, hand-to-hand fighting ensued before the Confederates pulled back to a new position. *
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
** The
British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...
occupied a large salient at
Ypres Ypres ( , ; nl, Ieper ; vls, Yper; german: Ypern ) is a Belgian city and municipality in the province of West Flanders. Though the Dutch name is the official one, the city's French name is most commonly used in English. The municipality co ...
for most of the war. Formed as a result of the
First Battle of Ypres The First Battle of Ypres (french: Première Bataille des Flandres; german: Erste Flandernschlacht – was a battle of the First World War, fought on the Western Front (World War I), Western Front around Ypres, in West Flanders, Belgium. Th ...
, it became one of the most bloody sectors of the Western Front. So enduring was the feature and so dreadful its reputation that when British infantry spoke of "The Salient", it was understood that they were referring to Ypres. ** A similar salient existed around the French city of
Verdun Verdun (, , , ; official name before 1970 ''Verdun-sur-Meuse'') is a large city in the Meuse department in Grand Est, northeastern France. It is an arrondissement of the department. Verdun is the biggest city in Meuse, although the capital ...
; the
Battle of Verdun The Battle of Verdun (french: Bataille de Verdun ; german: Schlacht um Verdun ) was fought from 21 February to 18 December 1916 on the Western Front in France. The battle was the longest of the First World War and took place on the hills north ...
around it cost both sides heavy casualties. ** The
Germans , native_name_lang = de , region1 = , pop1 = 72,650,269 , region2 = , pop2 = 534,000 , region3 = , pop3 = 157,000 3,322,405 , region4 = , pop4 = ...
occupied a small salient in front of
Fromelles Fromelles () is a commune in the Nord department in northern France. it had a population of 1,041; its inhabitants are called ''Fromellois''. It is located about to the west of Lille. First World War The village of Fromelles was captured by a ...
called the
Sugarloaf A sugarloaf was the usual form in which refined sugar was produced and sold until the late 19th century, when granulated and cube sugars were introduced. A tall cone with a rounded top was the end product of a process in which dark molasses, a r ...
due to its distinctive shape. Being small, it provided advantage to the occupiers by allowing them to
enfilade Enfilade and defilade are concepts in military tactics used to describe a military formation's exposure to enemy fire. A formation or position is "in enfilade" if weapon fire can be directed along its longest axis. A unit or position is "in de ...
the stretches of
no man's land No man's land is waste or unowned land or an uninhabited or desolate area that may be under dispute between parties who leave it unoccupied out of fear or uncertainty. The term was originally used to define a contested territory or a dump ...
on either flank. *
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
** The
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
occupied a massive, 150 km deep salient at
Kursk Kursk ( rus, Курск, p=ˈkursk) is a city and the administrative center of Kursk Oblast, Russia, located at the confluence of the Kur, Tuskar, and Seym rivers. The area around Kursk was the site of a turning point in the Soviet–German stru ...
that became the site of the largest tank battle in history and a decisive battle on the Eastern Front. ** The
German Army The German Army (, "army") is the land component of the armed forces of Germany. The present-day German Army was founded in 1955 as part of the newly formed West German ''Bundeswehr'' together with the ''Marine'' (German Navy) and the ''Luftwaf ...
launched a surprise attack against advancing Allied forces in the
Ardennes The Ardennes (french: Ardenne ; nl, Ardennen ; german: Ardennen; wa, Årdene ; lb, Ardennen ), also known as the Ardennes Forest or Forest of Ardennes, is a region of extensive forests, rough terrain, rolling hills and ridges primarily in Be ...
(a region of extensive forests primarily in
Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...
and
Luxembourg Luxembourg ( ; lb, Lëtzebuerg ; french: link=no, Luxembourg; german: link=no, Luxemburg), officially the Grand Duchy of Luxembourg, ; french: link=no, Grand-Duché de Luxembourg ; german: link=no, Großherzogtum Luxemburg is a small lan ...
) in December 1944. This battle created a large salient for several weeks, and is commonly known as the
Battle of the Bulge The Battle of the Bulge, also known as the Ardennes Offensive, was the last major German offensive (military), offensive military campaign, campaign on the Western Front (World War II), Western Front during World War II. The battle lasted fr ...
(also known as the Ardennes Offensive and the Von Rundstedt Offensive). *
Turkish invasion of Cyprus The Turkish invasion of Cyprus began on 20 July 1974 and progressed in two phases over the following month. Taking place upon a background of Cypriot intercommunal violence, intercommunal violence between Greek Cypriots, Greek and Turkish ...
** Turkish forces reached as far south as the
Turkish Cypriot Turkish Cypriots or Cypriot Turks ( tr, Kıbrıs Türkleri or ''Kıbrıslı Türkler''; el, Τουρκοκύπριοι, Tourkokýprioi) are ethnic Turks originating from Cyprus. Following the Ottoman conquest of the island in 1571, about 30,00 ...
village of
Louroujina Louroujina ( []; , previously or ) is a village in Geography of Cyprus, Cyprus, located within the salient (geography), salient that marks the southernmost extent of Northern Cyprus. It was one of the largest Turkish Cypriot villages in Cyprus be ...
. The cease-fire line dividing
Cyprus Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is geo ...
into Greek and Turkish-controlled sectors put Louroujina in a salient — accessible from the rest of Turkish Cypriot-controlled Cyprus by a single road. *
Bangladesh Liberation War The Bangladesh Liberation War ( bn, মুক্তিযুদ্ধ, , also known as the Bangladesh War of Independence, or simply the Liberation War in Bangladesh) was a revolution and War, armed conflict sparked by the rise of the Benga ...
** The
Battle of Boyra The Battle of Boyra, on 22 November 1971, was a Ground and aerial battle that was fought between the India and Pakistan The Pakistani Army was engaged in combat against the Mukti Bahini (Bengali Guerrilla fighters) and a Division size detachment ...
was fought by the
Indian Army The Indian Army is the land-based branch and the largest component of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Army, and its professional head is the Chief of Army Staff (COAS), who is a four- ...
and the
Mukti Bahini The Mukti Bahini ( bn, মুক্তিবাহিনী, translates as 'freedom fighters', or liberation army), also known as the Bangladesh Forces, was the guerrilla resistance movement consisting of the Bangladeshi military, paramilitary ...
against the
Pakistan Army The Pakistan Army (, ) is the Army, land service branch of the Pakistan Armed Forces. The roots of its modern existence trace back to the British Indian Army that ceased to exist following the partition of India, Partition of British India, wh ...
, over the Boyra salient, overlooking an important supply route, the Jessore Road.


Pocket

In mobile warfare, such as the German
Blitzkrieg Blitzkrieg ( , ; from 'lightning' + 'war') is a word used to describe a surprise attack using a rapid, overwhelming force concentration that may consist of armored and motorized or mechanized infantry formations, together with close air su ...
, salients were more likely to be made into pockets which became the focus of annihilation battles. A pocket carries connotations that the encircled forces have not allowed themselves to be encircled intentionally, as they may when defending a fortified position, which is usually called a siege. This is a similar distinction to that made between a
skirmish Skirmishers are light infantry or light cavalry soldiers deployed as a vanguard, flank guard or rearguard to screen a tactical position or a larger body of friendly troops from enemy advances. They are usually deployed in a skirmish line, an i ...
and
pitched battle A pitched battle or set-piece battle is a battle in which opposing forces each anticipate the setting of the battle, and each chooses to commit to it. Either side may have the option to disengage before the battle starts or shortly thereafter. A ...
.


See also

* Panhandle *
Spur (mountain) A spur is a lateral ridge or tongue of land descending from a hill, mountain or main crest of a ridge. It can also be defined as another hill or mountain range which projects in a lateral direction from a main hill or mountain range. Examples of ...


References


External links

{{Wiktionary, salient, re-entrant, pocket
The Great Kitilä Motti
(Winter War history from a documentary film's website) Military terminology Military tactics Orienteering Land warfare