A rearguard is a part of a military force that protects it from attack from the rear, either during an advance or
withdrawal. The term can also be used to describe forces protecting lines, such as
communication lines, behind an army. Even more generally, a rearguard action may refer
idiomatically to an attempt at preventing something though it is likely too late to be prevented; this idiomatic meaning may apply in either a military- or in a non-military, perhaps-figurative context.
Origins
The term rearguard (also ''rereward'', ''rearward'') originates from the medieval custom of dividing an army into three ''
battles
A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and force ...
'' or ''wards'';
Van
A van is a type of road vehicle used for transporting goods or people. Depending on the type of van, it can be bigger or smaller than a pickup truck and SUV, and bigger than a common car. There is some varying in the scope of the word across th ...
, Main (or Middle) and Rear. The Rear Ward usually followed the other wards on the march and during a battle usually formed the rearmost of the three if deployed in
column
A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. ...
or the left-hand ward if deployed in
line
Line most often refers to:
* Line (geometry), object with zero thickness and curvature that stretches to infinity
* Telephone line, a single-user circuit on a telephone communication system
Line, lines, The Line, or LINE may also refer to:
Art ...
.
Original usage
The commonly accepted definition of a rearguard in military tactics was largely established in the battles of the late 19th century. Before the mechanization of troop formations, most rearguard tactics originally contemplated the use of
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 ...
forces. This definition was later extended to highly mobile infantry as well as mechanized or armored forces.
Narrowly defined, a rearguard is a covering detachment that protects the retreating main ground force element (main body), or column, and is charged with executing defensive or retrograde movements between the main body and the enemy to prevent the latter from attacking or interfering with the movement of the main body.
Contemporary usage
A more expansive definition of the rearguard arose during the large-scale struggles between nation-states during the First- and Second World Wars. In this context, a rearguard can be a minor unit of regular- or irregular-troops that protect the withdrawal of larger numbers of personnel (military or civilian) during a retreat --by blocking, defending, delaying, or otherwise interfering with enemy forces in order to gain time for the remainder to regroup or reorganize. Rearguard actions may be undertaken in a number of ways: defensively, such as by defending strongpoints or tactically important terrain; or offensively, by pre-emptively assaulting with a ''spoiling attack'' an enemy that is preparing offensive operations.
Two examples of rearguard actions are:
*
Rorke's Drift
The Battle of Rorke's Drift (1879), also known as the Defence of Rorke's Drift, was an engagement in the Anglo-Zulu War. The successful British defence of the mission (station), mission station of Rorke's Drift, under the command of Lieutenants ...
during the
Zulu War
The Anglo-Zulu War was fought in 1879 between the British Empire and the Zulu Kingdom. Following the passing of the British North America Act of 1867 forming a federation in Canada, Lord Carnarvon thought that a similar political effort, coup ...
(1879)
[Crowley, Liz and Hand, David. ]
Football, Europe and the Press
', p. 31 (Routledge 2013).
*
Battle of Dunkirk
The Battle of Dunkirk (french: Bataille de Dunkerque, link=no) was fought around the French port of Dunkirk (Dunkerque) during the Second World War, between the Allies and Nazi Germany. As the Allies were losing the Battle of France on t ...
(1940)
A
World War I-era example is the rearguard action fought by small units of the
Serbian Army to protect retreating Serbian troops, the
royal family, and Serbian refugees from advancing forces of the
Central Powers
The Central Powers, also known as the Central Empires,german: Mittelmächte; hu, Központi hatalmak; tr, İttifak Devletleri / ; bg, Централни сили, translit=Tsentralni sili was one of the two main coalitions that fought in W ...
during their
retreat through Albania and Montenegro in 1915–1916. The nature of combat in rearguard actions involving combat between armies of nation-states is typically desperate and vicious, and rearguard troops may be called upon to incur heavy casualties or even to sacrifice all of their combat strength and personnel for the benefit of the withdrawing forces.
Idiomatic expression
Fighting or mounting a rearguard action is also sometimes an
idiomatic expression, outside any military context. That idiom refers to trying very hard to prevent a thing from happening even though it is probably too late.
Cambridge Idioms Dictionary
' (2nd ed., Cambridge University Press, 2006) via '' The Free Dictionary''. An example of a famous rearguard action outside the military context is the effort by Roman emperor
Julian around 362 A.D. to restore
Paganism as the state religion instead of Christianity. Sportswriters employ the idiom as well.
[Reavis, Tracey. ]
The Life and Career of David Beckham: Football Legend, Cultural Icon
', p. 70 (Rowman & Littlefield, 2014).
See also
*
Quick reaction force
In military science nomenclature, a quick reaction force (QRF) is an armed military unit capable of rapidly responding to developing situations, typically to assist allied units in need of such assistance. They are to have equipment ready to res ...
*
Vanguard (military tactics)
The vanguard (also called the advance guard) is the leading part of an advancing military formation. It has a number of functions, including seeking out the enemy and securing ground in advance of the main force.
History
The vanguard derives fr ...
*
Battle of Tirad Pass
The Battle of Tirad Pass ( es, Batalla de Paso Tirad; tgl, Labanan sa Pasong Tirad; ilo, Gubat ti Paso), sometimes referred to as the "Philippine Thermopylae", was a battle in the Philippine–American War fought on December 2, 1899, in north ...
References
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Military tactics