Infantry tactics
Encyclopedia
Infantry tactics are the combination of military concepts and methods used by infantry
Infantry
Infantrymen are soldiers who are specifically trained for the role of fighting on foot to engage the enemy face to face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of combat arms, they are the backbone of armies...

 to achieve tactical objective
Tactical objective
A tactical objective is the immediate short term desired result of a given activity, task or mission, usually entrusted to the lower positioned management in a three-tier organisation's structure of field or front desk, middle and executive management....

s during combat. The role of the infantry on the battlefield is typically to close with the enemy and kill or capture him (or to defend positions against enemy attacks) and infantry tactics are the means by which this is achieved. Traditionally infantry have made up the largest proportion of an army's fighting strength, and consequently often suffer the heaviest casualties (KIA
Killed in action
Killed in action is a casualty classification generally used by militaries to describe the deaths of their own forces at the hands of hostile forces. The United States Department of Defense, for example, says that those declared KIA need not have fired their weapons but have been killed due to...

/DOW, WIA
Wounded in action
Wounded in action describes soldiers who have been wounded while fighting in a combat zone during war time, but have not been killed. Typically it implies that they are temporarily or permanently incapable of bearing arms or continuing to fight....

, & MIA
Missing in action
Missing in action is a casualty Category assigned under the Status of Missing to armed services personnel who are reported missing during active service. They may have been killed, wounded, become a prisoner of war, or deserted. If deceased, neither their remains nor grave can be positively...

, but excluding POW
Prisoner of war
A prisoner of war or enemy prisoner of war is a person, whether civilian or combatant, who is held in custody by an enemy power during or immediately after an armed conflict...

). Throughout history infantrymen have sought to minimise their losses in both attack and defence through effective tactics.

Infantry tactics are the oldest method of warfare, and span all eras. In different periods, the prevailing technology of the day has had an important impact on infantry tactics. In the opposite direction, tactical methods can encourage the development of particular technologies. Similarly, as weapons and tactics evolve, so too do the tactical formations employed such as the Greek phalanx
Phalanx formation
The phalanx is a rectangular mass military formation, usually composed entirely of heavy infantry armed with spears, pikes, sarissas, or similar weapons...

, the Spanish tercio
Tercio
The tercio was a Renaissance era military formation made up of a mixed infantry formation of about 3,000 pikemen, swordsmen and arquebusiers or musketeers in a mutually supportive formation. It was also sometimes referred to as the Spanish Square...

, the Napoleonic column or the British 'thin red line'
The Thin Red Line (1854 battle)
The Thin Red Line was a military action by the Sutherland Highlanders red-coated 93rd Regiment at the Battle of Balaclava on October 25, 1854, during the Crimean War. In this incident the 93rd aided by a small force of Royal Marines and some Turkish infantrymen, led by Sir Colin Campbell, routed a...

. In different periods the numbers of troops deployed as a single unit can also vary widely, from thousands to a few dozen.

Modern infantry tactics vary with the type of infantry deployed. Armoured and mechanised infantry are moved and supported in action by vehicles, while others may operate amphibiously from ships, or as airborne troops
Airborne forces
Airborne forces are military units, usually light infantry, set up to be moved by aircraft and 'dropped' into battle. Thus they can be placed behind enemy lines, and have an ability to deploy almost anywhere with little warning...

 inserted by helicopter, parachute or glider. Whereas light infantry may operate mainly on foot. In recent years peacekeeping
Peacekeeping
Peacekeeping is an activity that aims to create the conditions for lasting peace. It is distinguished from both peacebuilding and peacemaking....

 operations in support of humanitarian relief efforts have become particularly important. Tactics also vary with terrain with operations in urban
Urban warfare
Urban warfare is combat conducted in urban areas such as towns and cities. Urban combat is very different from combat in the open at both the operational and tactical level...

 areas, jungle
Jungle warfare
Jungle warfare is a term used to cover the special techniques needed for military units to survive and fight in jungle terrain.It has been the topic of extensive study by military strategists, and was an important part of the planning for both sides in many conflicts, including World War II and the...

, desert
Desert warfare
Desert warfare is combat in deserts. In desert warfare the elements can sometimes be more dangerous than the actual enemy. The desert terrain is the second most inhospitable to troops following a cold environment...

 or arctic
Arctic warfare
Arctic warfare or winter warfare is a term used to describe armed conflict that takes place in an exceptionally cold weather, usually in snowy and icy terrain, sometimes on ice-covered bodies of water...

 conditions all being markedly different.

Although infantry tactics in the 21st Century rely on a large variety of weapons and equipment using diverse technologies, the primary tool of the trade used in infantry tactics is the rifle of the individual infantryman, and the equipment item infantry tactics most depends on, aside from availability of food, water and ammunition, is the pair of boots used for marching from position to position. In this regard, modern warfare does not differ significantly from the time of Jason of Pherae
Jason of Pherae
Jason of Pherae was the ruler of Thessaly during the period just before Philip II of Macedon came to power. He had succeeded his father Lycophron I of Pherae as tyrant of Pherae and was appointed tagus, or king, of Thessaly in the 370s BC and soon extended his control to much of the surrounding...

.

Ancient infantry tactics

The infantry phalanx
Phalanx formation
The phalanx is a rectangular mass military formation, usually composed entirely of heavy infantry armed with spears, pikes, sarissas, or similar weapons...

 was a Sumer
Sumer
Sumer was a civilization and historical region in southern Mesopotamia, modern Iraq during the Chalcolithic and Early Bronze Age....

ian tactical formation as far back as the third millennium BC. It was a tightly knit group of hoplite
Hoplite
A hoplite was a citizen-soldier of the Ancient Greek city-states. Hoplites were primarily armed as spearmen and fought in a phalanx formation. The word "hoplite" derives from "hoplon" , the type of the shield used by the soldiers, although, as a word, "hopla" could also denote weapons held or even...

s, generally upper and middle class men, typically eight to twelve ranks deep, armored in helmet
Helmet
A helmet is a form of protective gear worn on the head to protect it from injuries.Ceremonial or symbolic helmets without protective function are sometimes used. The oldest known use of helmets was by Assyrian soldiers in 900BC, who wore thick leather or bronze helmets to protect the head from...

, breastplate
Breastplate
A breastplate is a device worn over the torso to protect it from injury, as an item of religious significance, or as an item of status. A breastplate is sometimes worn by mythological beings as a distinctive item of clothing.- Armour :...

, and greave
Greave
A greave is a piece of armour that protects the leg.-Description:...

s, armed with two- to three-meter (6–9 foot) pikes
Pike (weapon)
A pike is a pole weapon, a very long thrusting spear used extensively by infantry both for attacks on enemy foot soldiers and as a counter-measure against cavalry assaults. Unlike many similar weapons, the pike is not intended to be thrown. Pikes were used regularly in European warfare from the...

 and overlapping round shields
Shield
A shield is a type of personal armor, meant to intercept attacks, either by stopping projectiles such as arrows or redirecting a hit from a sword, mace or battle axe to the side of the shield-bearer....

. It was most effective in narrow areas, such as Thermopylae
Thermopylae
Thermopylae is a location in Greece where a narrow coastal passage existed in antiquity. It derives its name from its hot sulphur springs. "Hot gates" is also "the place of hot springs and cavernous entrances to Hades"....

, or in large numbers. Although the early Greeks focused on the chariot
Chariot
The chariot is a type of horse carriage used in both peace and war as the chief vehicle of many ancient peoples. Ox carts, proto-chariots, were built by the Proto-Indo-Europeans and also built in Mesopotamia as early as 3000 BC. The original horse chariot was a fast, light, open, two wheeled...

, because of local geography, the phalanx was well developed in Greece and had superseded most cavalry
Cavalry
Cavalry or horsemen were soldiers or warriors who fought mounted on horseback. Cavalry were historically the third oldest and the most mobile of the combat arms...

 tactics by the Persian Wars. The brilliant Philip II of Macedon
Philip II of Macedon
Philip II of Macedon "friend" + ἵππος "horse" — transliterated ; 382 – 336 BC), was a king of Macedon from 359 BC until his assassination in 336 BC. He was the father of Alexander the Great and Philip III.-Biography:...

 reorganized his army, with emphasis on phalanges, and the first scientific military research. Theban and Macedonian tactics were variations focused on a concentrated point to break through the enemy phalanx, following the shock of cavalry. Carefully organized (into tetrarchia of 64 men, taxiarchiae of two tetrarchiae, syntagmatae of two taxiarchiae, chilliarchiae of four syntagmatae, and phalanges of four chilliarchiae, with two chilliarchiae of peltast
Peltast
A peltast was a type of light infantry in Ancient Thrace who often served as skirmishers.-Description:Peltasts carried a crescent-shaped wicker shield called pelte as their main protection, hence their name. According to Aristotle the pelte was rimless and covered in goat or sheep skin...

s and one chilliarchia each of psiloi
Psiloi
In Ancient Greek warfare, psiloi were extremely light infantry who acted as skirmishers and missile troops....

and cavalry {epihipparchy} attached.) and thoroughly trained, these proved exceedingly effective in the hands of Alexander III of Macedon.

However, as effective as the Greek phalanx was, it was inflexible. Rome
Roman Empire
The Roman Empire was the post-Republican period of the ancient Roman civilization, characterised by an autocratic form of government and large territorial holdings in Europe and around the Mediterranean....

 made their army into a complex professional organization, with a developed leadership structure and a rank system. The Romans made it possible for small-unit commanders to receive rewards and medals for valor and advancement in battle. Another major advantage was a new tactical formation, the manipular legion (adopted around 300BC), which could operate independently to take advantage of gaps in an enemy line, as at the Battle of Pydna
Battle of Pydna
The Battle of Pydna in 168 BC between Rome and the Macedonian Antigonid dynasty saw the further ascendancy of Rome in the Hellenic/Hellenistic world and the end of the Antigonid line of kings, whose power traced back to Alexander the Great.Paul K...

. Perhaps the most important innovation was improving the quality of training to a level not seen before. Although individual methods were used by earlier generations, the Romans were able to combine them into an overwhelmingly successful army, able to defeat any enemy for more than two millennia.

The Roman tactical system

On the infantry level, the Roman Army
Roman army
The Roman army is the generic term for the terrestrial armed forces deployed by the kingdom of Rome , the Roman Republic , the Roman Empire and its successor, the Byzantine empire...

 adapted new weapons: The pilum
Pilum
The pilum was a javelin commonly used by the Roman army in ancient times. It was generally about two metres long overall, consisting of an iron shank about 7 mm in diameter and 60 cm long with pyramidal head...

(a specialized javelin), the gladius
Gladius
Gladius was the Latin word for sword, and is used to represent the primary sword of Ancient Roman soldiers. Early ancient Roman swords were similar to those used by the Greeks. From the 3rd century BC, the Romans adopted swords similar to those used by the Celtiberians and others during the early...

(a short thrusting sword), and a new convex shield (for better protection against spears) which unlocked the phalanx while still providing its protection. Generally, battle opened with a volley of light spears from up to 18m (20yd) (and frequently far less), followed by volleys of heavy spears (pila). Following these volleys, Roman soldiers would close their enemy to engage with gladii. As was the case with throwing spears, the Roman soldiers were trained profusely to stab with these swords instead of slashing. Their training was constant and repetitive, to ensure stabbing was used in combat rather than a more natural slashing motion. To motivate the Roman soldier to come within two meters (6 ft) of his enemy (as he was required to do with the gladius) he was made a citizen after a completed term of service.

The manipular legion was a major improvement over the phalanx on which it was based, providing a flexibility and responsiveness unequalled before that time. By increasing dispersal, triple that of a typical phalanx, the manipular legion had the unanticipated benefit of reducing the lethality of opposing weapons. Coupled with superb training and effective leaders, the Roman army was the finest in the world for centuries. The army's power on the field was such that its leaders avoided most fortifications, preferring to meet the enemy on open ground. To take an enemy-held fortification
Fortification
Fortifications are military constructions and buildings designed for defence in warfare and military bases. Humans have constructed defensive works for many thousands of years, in a variety of increasingly complex designs...

, the Roman army would cut off any supply lines, build watchtowers around the perimeter, set up catapult
Catapult
A catapult is a device used to throw or hurl a projectile a great distance without the aid of explosive devices—particularly various types of ancient and medieval siege engines. Although the catapult has been used since ancient times, it has proven to be one of the most effective mechanisms during...

s, and force the enemy to attempt to stop them from reducing the fortification's walls to rubble. The Roman army's achievements were carefully carved in stone on Trajan's Column
Trajan's Column
Trajan's Column is a Roman triumphal column in Rome, Italy, which commemorates Roman emperor Trajan's victory in the Dacian Wars. It was probably constructed under the supervision of the architect Apollodorus of Damascus at the order of the Roman Senate. It is located in Trajan's Forum, built near...

, and are well documented by artifacts strewn about battlefields all over Europe.

Middle Ages

After the fall of the Roman Empire, many of the ingenious tactics they used disappeared. Tribes such as the Visigoths and Vandals
Vandals
The Vandals were an East Germanic tribe that entered the late Roman Empire during the 5th century. The Vandals under king Genseric entered Africa in 429 and by 439 established a kingdom which included the Roman Africa province, besides the islands of Sicily, Corsica, Sardinia and the Balearics....

 preferred to simply rush their enemies in a massive horde. These tribes would often win battles against more advanced enemies by achieving surprise and outnumbering their foes. Born out of the partition of the Roman Empire, the Byzantine Empire
Byzantine Empire
The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

 created an effective military. Its conscripts were well-paid and led by commanders educated in military tactics and history. However, the army mostly relied on cavalry, making the infantry a smaller portion of its overall force.

The Vikings were able to be effective against stronger enemies through surprise and mobility. Like guerrillas in other wars, the Vikings could decide when and where to attack. In part because of their flat bottomed ships, which enabled them to sneak deep into Europe by river before carrying out an attack, the Vikings could frequently catch their enemies by surprise. Monasteries were common targets because they were seldom heavily defended and often contained substantial amounts of valuables. The Vikings were fearsome in battle, but they became even more so when they included Berserkers.

Battles of the Middle Ages were often smaller than those involving the Roman and Grecian armies of Antiquity
Classical antiquity
Classical antiquity is a broad term for a long period of cultural history centered on the Mediterranean Sea, comprising the interlocking civilizations of ancient Greece and ancient Rome, collectively known as the Greco-Roman world...

. Armies (much like nations of the period) were more decentralized. There was little systematic organisation of supplies and equipment. Leaders were often incompetent; their positions of authority often based on birth, not ability. Most soldiers were much more loyal to their feudal lord
Feudalism
Feudalism was a set of legal and military customs in medieval Europe that flourished between the 9th and 15th centuries, which, broadly defined, was a system for ordering society around relationships derived from the holding of land in exchange for service or labour.Although derived from the...

 than to their nations, and insubordination within armies was common. However, the biggest difference between previous wars and those of the Middle Ages was the use of heavy cavalry, particularly knights. Knights could often easily overrun infantry armed with swords, axes, and clubs. Infantry typically outnumbered knights somewhere between five and ten to one. They supported the knights and defended any loot the formation had. Infantry armed with spears could counter the threat posed by enemy cavalry. At other times pits, caltraps, wagons or sharpened wooden stakes would be used as protection from charging cavalry, while archers brought down the enemy horsemen with arrows; the English used stakes to defend against French knights at the Battle of Agincourt
Battle of Agincourt
The Battle of Agincourt was a major English victory against a numerically superior French army in the Hundred Years' War. The battle occurred on Friday, 25 October 1415 , near modern-day Azincourt, in northern France...

 in 1415.

Pikemen often became a substitute for communities and villages who could not afford large forces of heavy cavalry. The pike could be up to 18 feet (5.5 m) long, whereas the spear was only 6 to 8 feet (2.4 m) in length. Archers would be integrated into these forces of spearmen or pikemen to rain down arrows upon an enemy while the spears or pikes held the enemy at bay. Polearms were improved again with creation of the halberd
Halberd
A halberd is a two-handed pole weapon that came to prominent use during the 14th and 15th centuries. Possibly the word halberd comes from the German words Halm , and Barte - in modern-day German, the weapon is called Hellebarde. The halberd consists of an axe blade topped with a spike mounted on...

. The halberd could be the length of a spear, but with an axe head which enabled the user to stab or chop the enemy cavalry with either the front of the axe or a thin point on the opposite side. The Japanese also created polearms. The naginata
Naginata
The naginata is one of several varieties of traditionally made Japanese blades in the form of a pole weapon. Naginata were originally used by the samurai class in feudal Japan, and naginata were also used by ashigaru and sōhei .-Description:A naginata consists of a wooden shaft with a curved...

 consisted of an approximately 6 feet (1.8 m) long shaft and a 2.5 foot (0.762 m) blade. The naginata was often used by women to guard a castle in the absence of men.

The crossbow
Crossbow
A crossbow is a weapon consisting of a bow mounted on a stock that shoots projectiles, often called bolts or quarrels. The medieval crossbow was called by many names, most of which derived from the word ballista, a torsion engine resembling a crossbow in appearance.Historically, crossbows played a...

, which did not require trained archers, was frequently used in armies where the extensive training necessary for longbow
Longbow
A longbow is a type of bow that is tall ; this will allow its user a fairly long draw, at least to the jaw....

 was not practical. The biggest disadvantage of crossbows was the slow reloading time. With the advent of steel and mechanical drawing aids, crossbows became more powerful than ever. Armor proof against longbows and older crossbows could not stop quarrel
Quarrel
A quarrel or bolt is the term for the ammunition used in a crossbow. The name "quarrel" is derived from the French carré, "square", referring to the fact that they typically have square heads. Although their length varies, they are typically shorter than traditional arrows.Bolts and arrows have...

s from these improved weapons. Pope Innocent II
Pope Innocent II
Pope Innocent II , born Gregorio Papareschi, was pope from 1130 to 1143, and was probably one of the clergy in personal attendance on the antipope Clement III .-Early years:...

 put a ban on them, but the move toward using this lethal weapon had already started.

The first gunpowder
Gunpowder
Gunpowder, also known since in the late 19th century as black powder, was the first chemical explosive and the only one known until the mid 1800s. It is a mixture of sulfur, charcoal, and potassium nitrate - with the sulfur and charcoal acting as fuels, while the saltpeter works as an oxidizer...

 weapons usually consisted of metal tubes tied down to wooden staves. Usually, these weapons could only be fired once. These gonnes, or hand cannons, were not very accurate, and would usually be fired from city walls or in ambush
Ambush
An ambush is a long-established military tactic, in which the aggressors take advantage of concealment and the element of surprise to attack an unsuspecting enemy from concealed positions, such as among dense underbrush or behind hilltops...

. Like the crossbow, the gonne did not require trained soldiers and could penetrate the armor worn by enemy soldiers. Missiliers (whatever their weapon) were protected by soldiers with melee weapons
Mêlée weapon
A melee weapon is any weapon that does not involve a projectile — that is, both the user and target of the weapon are in contact with it simultaneously in normal use...

. Knights would be on either sides of this force and close in on the enemy to destroy them after they had been weakened by volleys. The introduction of firearms presaged a social revolution; even an illiterate peasant could kill a noble knight. This factor led samurai
Samurai
is the term for the military nobility of pre-industrial Japan. According to translator William Scott Wilson: "In Chinese, the character 侍 was originally a verb meaning to wait upon or accompany a person in the upper ranks of society, and this is also true of the original term in Japanese, saburau...

to prohibit firearms in Japan.

Renaissance period

As firearms became cheaper and more effective, they grew to widespread use among infantry beginning in the 16th century. Requiring little training, firearms soon began to make swords, maces, bows, and other weapons obsolete. Pikes, as a part of pike and shot
Pike and shot
Pike and shot is a historical method of infantry combat, and also refers to an era of European warfare generally considered to cover the period from the Italian Wars to the evolution of the bayonet in the late seventeenth century...

 formation survived a good deal longer. By the mid-16th century, firearms had become the main weapons in many armies. The main firearm of that period was the arquebus
Arquebus
The arquebus , or "hook tube", is an early muzzle-loaded firearm used in the 15th to 17th centuries. The word was originally modeled on the German hakenbüchse; this produced haquebute...

. Although less accurate than the bow, an arquebus could penetrate most armours of the period and required little training. In response, armor thickened, making it very heavy and expensive. As a result, the cuirass
Cuirass
A cuirass is a piece of armour, formed of a single or multiple pieces of metal or other rigid material, which covers the front of the torso...

 replaced the mail hauberk
Hauberk
A hauberk is a shirt of chainmail. The term is usually used to describe a shirt reaching at least to mid-thigh and including sleeves. Haubergeon generally refers to a shorter variant with partial sleeves, but the terms are often used interchangeably.- History :The word hauberk is derived from the...

 and full suits of armour, and only the most valuable cavalry wore more than a padded shirt.

Soldiers armed with arquebuses were usually placed in three lines so one line would be able to fire, while the other two could reload. This tactic enabled an almost constant flow of gunfire to be maintained, and made up for the inaccuracy of the weapon. In order to hold back cavalry, wooden palisades or pikemen would be in front of arquebusiers. An example of this is the Battle of Nagashino
Battle of Nagashino
The ' took place in 1575 near Nagashino Castle on the plain of Shitaragahara in the Mikawa province of Japan. Forces under Takeda Katsuyori had besieged the castle since the 17th of June; Okudaira Sadamasa , a Tokugawa vassal, commanded the defending force...

.

The introduction of the bayonet
Bayonet
A bayonet is a knife, dagger, sword, or spike-shaped weapon designed to fit in, on, over or underneath the muzzle of a rifle, musket or similar weapon, effectively turning the gun into a spear...

 turned all musketeer
Musketeer
A musketeer was an early modern type of infantry soldier equipped with a musket. Musketeers were an important part of early modern armies, particularly in Europe. They sometimes could fight on horseback, like a dragoon or a cavalryman...

s into pikemen. Generally, in battles, two sides lined up and fired a few volleys at each other before one side charged with bayonets fixed. Due to the high cost of professional armies, a typical battle-line consisted of two or three lines of musketeers. These basic principles dominated warfare in the 18th Century. The drilling of soldiers, introduced by Prince Maurice of Nassau, was precisely exercised and documented, each movement involved in loading a musket practised repeatedly, which proved a great advantage on the battlefield. Later, Gustav II
Gustavus Adolphus of Sweden
Gustav II Adolf has been widely known in English by his Latinized name Gustavus Adolphus Magnus and variously in historical writings also as Gustavus, or Gustavus the Great, or Gustav Adolph the Great,...

 perfected the infantry formations and made good use of the power of volley fire
Volley fire (infantry tactic)
Volley fire, as a military tactic, is the practice of having a line of soldiers all fire their gunssimultaneously at the enemy forces on command, usually to make up for inaccuracy, slow rate of fire, and limited range, and to create a maximum effect....

, by adopting (more reliable) wheel-locks, taking away their armor to make them more mobile, and increasing the numbers of musketeers (which the wheellock enabled him to do) by having them do double duty as pikemen (by way of the plug bayonet), well as by adopting the paper cartridge (with a consequent sharp increase in rate and volume of fire) and streamlining the musket reloading procedure.

Battle formations became more and more important, especially where infantry was being attacked by cavalry, thanks to the carré (square
Infantry square
An infantry square is a combat formation an infantry unit forms in close order when threatened with cavalry attack.-Very early history:The formation was described by Plutarch and used by the Romans, and was developed from an earlier circular formation...

), where the wounded, provisions, and officers were protected at the centre. Cavalry could not break a well-held square.

Napoleonic

Napoleon Bonaparte did many things to change the nature of warfare. Napoleon's single greatest legacy in warfare was the extensive use and elaboration of the disseminated army; he separated groups of units in his army to spread them out over a wider area but kept them under his central command unlike in earlier times when each separate division would have fought independently. This allowed him to force battle by turning or encircling the enemy army where in previous eras armies only fought by mutual consent or because a surprise manoeuvre had them trapped against an obstacle such as a river. This is now the standard mode of campaign, of course.

He relied heavily on the column
Column (formation)
A military column is a formation of soldiers marching together in one or more files in which the file is significantly longer than the width of ranks in the formation...

, a formation less than a hundred men wide and containing an entire brigade in tight formation and mostly advanced to contact with the bayonet. The constant movement and sheer mass of this formation could break through most enemy lines, but was susceptible to being broken by well drilled or large volumes of fire as it could not fire as it advanced. Its main advantage was its ability to march rapidly and then deploy into line comparatively easily, especially with well drilled and motivated troops such as those available to Napoleon after the French Revolution
French Revolution
The French Revolution , sometimes distinguished as the 'Great French Revolution' , was a period of radical social and political upheaval in France and Europe. The absolute monarchy that had ruled France for centuries collapsed in three years...

. He later utilised the Mixed Order
Mixed Order
The Mixed Order was a tactical formation originally used by demi-brigades of the French Revolutionary Army and then later by Napoleon's Grande Armée to great effect....

 formation which could be a combination of one or more lines supported by one or more columns. This offered the extended fire power of the line with the rapid reaction ability of the column in support.

The column formation allowed the unit rapid movement, a very effective charge (due to weight of numbers) or it could quickly form square to resist cavalry attacks, but by its nature only a fraction of its muskets would be able to open fire. The line offered a substantially larger musket frontage allowing for greater shooting capability but required extensive training to allow the unit to move over ground as one while retaining the line.

The mixed order remained a part of French tactical doctrine as the French army grew in discipline, capitalising as it did on the strengths of both the line and column formations, while avoiding some of their inherent weaknesses. It was used extensively by Napoleon when commanding the Grande Armée.

This greatly surpassed other armies at the time which had to move slowly to keep their lines aligned and coherent and as such keep the cavalry from their interior; spaces could be guarded with musket fire, but the line had to be generally aligned and this could be lost over even apparently flat undulating ground as individuals slowed or sped up across uneven ground. The only antidote was slow movement and the column afforded tactical battlefield manoeuvrability and as such a chance to outflank or outmanoeuvre the enemy, or, more importantly, concentrate against weaknesses in the enemy lines.

Napoleon was also an avid user of artillery - he began his career as an artillery officer - and used the artillery to great effect due to his specialist knowledge. The French army after the French Revolution
French Revolution
The French Revolution , sometimes distinguished as the 'Great French Revolution' , was a period of radical social and political upheaval in France and Europe. The absolute monarchy that had ruled France for centuries collapsed in three years...

 was greatly motivated and after the reforms of 1791, well trained in the newest doctrine.

His enemies eventually defeated Napoleon, but his tactics were studied well into the 19th Century, even as improved weapons made massed infantry attacks increasingly hazardous.

Column, due to its manoeuvrability and ease of control, were also used against natives in lands being colonized by Europeans during the late 19th Century.

Early modern

Countries which have not been major world powers have used many other infantry tactics. In South Africa, the Zulu impis (regiments) were infamous for their bull horn tactic. It involved four groups - two in the front, one on the left, and one on the right. They would surround the enemy unit, close in, and destroy them with short assegai
Assegai
An assegai or assagai is a pole weapon used for throwing or hurling, usually a light spear or javelin made of wood and pointed with iron.-Iklwa:...

, or iklwas while fire-armed Zulus kept up a harassing fire. The Zulu warriors surprised and often overwhelmed their enemies, even much better armed and equipped enemies such as the British army.

The Sudanese fought their enemies by using a handful of riflemen to lure enemy riflemen into the range of concealed Sudanese spearmen. In New Zealand the Māori hid in fortified bunkers or
Pa
-Places:* Pâ, a town in Burkina Faso* Pâ Department, a department in Burkina Faso* PA postcode area, in Scotland* Province of Palermo, Italy* Palo Alto, California* Panama, ISO country code** .pa, the country code top level domain for Panama...

 that could withstand strikes from even some of the most powerful weapons of the 19th century before luring opposing forces into an ambush. Sometimes the natives would arm themselves with weapons similar or superior to those of the imperialistic country they were fighting. During the Battle of Little Bighorn, Lt. Colonel George Custer and five out of twelve companies of the 7th Cavalry were destroyed by a force of Sioux
Sioux
The Sioux are Native American and First Nations people in North America. The term can refer to any ethnic group within the Great Sioux Nation or any of the nation's many language dialects...

 and Cheyenne
Cheyenne
Cheyenne are a Native American people of the Great Plains, who are of the Algonquian language family. The Cheyenne Nation is composed of two united tribes, the Só'taeo'o and the Tsétsêhéstâhese .The Cheyenne are thought to have branched off other tribes of Algonquian stock inhabiting lands...

.

Unconventional infantry tactics often put a conventional enemy at a disadvantage. During the Second Boer War
Second Boer War
The Second Boer War was fought from 11 October 1899 until 31 May 1902 between the British Empire and the Afrikaans-speaking Dutch settlers of two independent Boer republics, the South African Republic and the Orange Free State...

, the Boers used guerrilla tactics to fight the conventional British Army
British Army
The British Army is the land warfare branch of Her Majesty's Armed Forces in the United Kingdom. It came into being with the unification of the Kingdom of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England...

. Boer marksmen would often pick off British soldiers from hundreds of yards away. These constant sniper
Sniper
A sniper is a marksman who shoots targets from concealed positions or distances exceeding the capabilities of regular personnel. Snipers typically have specialized training and distinct high-precision rifles....

 attacks forced the British infantry to begin wearing khaki uniforms instead of their traditional red. The Boers were much more mobile than the British infantry and thus could usually choose where a battle would take place. These unconventional tactics forced the British to adopt some unorthodox tactics of their own.

Trench warfare tactics

Because of the increasing lethality of more modern weapons, such as artillery
Artillery
Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

 and machine gun
Machine gun
A machine gun is a fully automatic mounted or portable firearm, usually designed to fire rounds in quick succession from an ammunition belt or large-capacity magazine, typically at a rate of several hundred rounds per minute....

s, infantry tactics shifted to trench warfare
Trench warfare
Trench warfare is a form of occupied fighting lines, consisting largely of trenches, in which troops are largely immune to the enemy's small arms fire and are substantially sheltered from artillery...

. Massed infantry charges were now essentially suicidal, and the Western Front
Western Front (World War I)
Following the outbreak of World War I in 1914, the German Army opened the Western Front by first invading Luxembourg and Belgium, then gaining military control of important industrial regions in France. The tide of the advance was dramatically turned with the Battle of the Marne...

 ground to a standstill.

A common tactic used during the earlier stages of trench warfare was to shell an enemy trench line, at which point friendly infantry would leave the safety of their trenches, advance across no man's land
No man's land
No man's land is a term for land that is unoccupied or is under dispute between parties that leave it unoccupied due to fear or uncertainty. The term was originally used to define a contested territory or a dumping ground for refuse between fiefdoms...

, and seize the enemy trenches. However, this tactic of "preliminary bombardment
Bombardment
A bombardment is an attack by artillery fire directed against fortifications, troops or towns and buildings.Prior to World War I the term term was only applied to the bombardment of defenceless or undefended objects, houses, public buildings, it was only loosely employed to describe artillery...

" was largely unsuccessful. The nature of no man's land (filled with barbed wire and other obstructions) was one factor. For a unit to get to an enemy trench line, it had to cross this area, secure the enemy position, then face counterattack by opposing reserves. It also depended on the ability of friendly artillery to suppress enemy infantry and artillery, which was frequently limited by "bombproofs" (bunker
Bunker
A military bunker is a hardened shelter, often buried partly or fully underground, designed to protect the inhabitants from falling bombs or other attacks...

s), revetment
Revetment
Revetments, or revêtements , have a variety of meanings in architecture, engineering and art history. In stream restoration, river engineering or coastal management, they are sloping structures placed on banks or cliffs in such a way as to absorb the energy of incoming water...

s, poor ammunition, or simply inaccurate fire.

An improvement was the creeping barrage in which artillery fire is laid immediately in front of advancing infantry to clear any enemy in their way. This played an important part in later battles such as the Battle of Arras (1917)
Battle of Arras (1917)
The Battle of Arras was a British offensive during the First World War. From 9 April to 16 May 1917, British, Canadian, New Zealand, Newfoundland, and Australian troops attacked German trenches near the French city of Arras on the Western Front....

, of which Vimy Ridge
Battle of Vimy Ridge
The Battle of Vimy Ridge was a military engagement fought primarily as part of the Battle of Arras, in the Nord-Pas-de-Calais region of France, during the First World War. The main combatants were the Canadian Corps, of four divisions, against three divisions of the German Sixth Army...

 was a part. The tactic required close coordination in an era before widespread use of radio
Radio
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...

, and when laying telephone
Telephone
The telephone , colloquially referred to as a phone, is a telecommunications device that transmits and receives sounds, usually the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other...

 wire under fire was extremely hazardous. In response, the Germans devised the elastic defence
Defence in depth
Defence in depth is a military strategy; it seeks to delay rather than prevent the advance of an attacker, buying time and causing additional casualties by yielding space...

 and used infiltration tactics
Infiltration tactics
In warfare, infiltration tactics involve small, lightly equipped infantry forces attacking enemy rear areas while bypassing enemy front line strongpoints and isolating them for attack by follow-up troops with heavier weapons.-Development during World War I:...

in which shock troops
Shock troops
Shock troops or assault troops are formations created to lead an attack. "Shock troop" is a loose translation of the German word Stoßtrupp...

 quietly infiltrated the enemy's forward trenches, without the heavy bombardment that gave advance warning of an imminent attack. The Allies
Allies
In everyday English usage, allies are people, groups, or nations that have joined together in an association for mutual benefit or to achieve some common purpose, whether or not explicit agreement has been worked out between them...

 introduced the tank
Tank
A tank is a tracked, armoured fighting vehicle designed for front-line combat which combines operational mobility, tactical offensive, and defensive capabilities...

 to overcome the deadlock of static positions but mechanical unreliability prevented them from doing so.

The Germans used specially-trained Stormtroopers to great effect in 1918, during Operation Michael
Operation Michael
Operation Michael was a First World War German military operation that began the Spring Offensive on 21 March 1918. It was launched from the Hindenburg Line, in the vicinity of Saint-Quentin, France...

, breaching the Allied trench lines and allowing supporting infantry to pour through a wide breach in the front lines. Even though most of the German forces were on foot, they were soon threatening Paris
Paris
Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

. Only timely and stiff resistance, the use of reserves, and German logistical and manpower problems prevented disaster. After this spring offensive, the Allies launched a series of counter-attacks
Hundred Days Offensive
The Hundred Days Offensive was the final period of the First World War, during which the Allies launched a series of offensives against the Central Powers on the Western Front from 8 August to 11 November 1918, beginning with the Battle of Amiens. The offensive forced the German armies to retreat...

 with tanks and small units of assault infantry protected by air support and short intense artillery barrages while the main infantry force followed and seized strongpoints. This forced the Germans back and after less than three months the allies had made the largest territorial gains on the western front since the war began. The Germans then sued for peace ending the war.

Mobile infantry tactics

Since trench warfare had been rendered obsolete by the tank, new infantry tactics were devised. More than ever, battles consisted of infantry working together with tanks, aircraft, artillery, (see combined arms
Combined arms
Combined arms is an approach to warfare which seeks to integrate different branches of a military to achieve mutually complementary effects...

). One example of this is how infantry would be sent ahead of tanks to search for anti-tank
Anti-tank warfare
Anti-tank warfare was created by the need to seek technology and tactics to destroy tanks and their supporting infantry during the First World War...

 teams, while tanks would provide cover for the infantry. Portable radios allowed field commanders to communicate with their HQs, allowing new orders to be relayed instantly.

Another major difference from any other previous conflict was the means of transportation; no longer did soldiers have to walk (or ride a horse) from location to location. The prevalence of motor transport, however, has been overstated; Germany used more horses for transport in WWII than in WWI, and British troops as late as June 1944 were still not fully motorized. Although there were trucks in World War I, their mobility could never be fully exploited because of the trench warfare stalemate, as well as the terribly torn up terrain at the front and the ineffectiveness of vehicles at the time. During World War II, infantry could be moved from one location to another using half-tracks, trucks, and even aircraft, which left them better rested and able to fight once they reached their objective; this also influenced speed of deployment and casualties. A new type of infantry, the paratrooper
Paratrooper
Paratroopers are soldiers trained in parachuting and generally operate as part of an airborne force.Paratroopers are used for tactical advantage as they can be inserted into the battlefield from the air, thereby allowing them to be positioned in areas not accessible by land...

, was deployed as well. These lightly armed soldiers would parachute
Parachute
A parachute is a device used to slow the motion of an object through an atmosphere by creating drag, or in the case of ram-air parachutes, aerodynamic lift. Parachutes are usually made out of light, strong cloth, originally silk, now most commonly nylon...

 behind enemy lines, hoping to catch the enemy off-guard. They were first used by the Germans to seize key bridges in the Netherlands
Netherlands
The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

, and prevented their destruction long enough for additional forces to arrive. They required prompt support from regulars, however; First British Airborne was decimated at Arnhem
Battle of Arnhem
The Battle of Arnhem was a famous Second World War military engagement fought in and around the Dutch towns of Arnhem, Oosterbeek, Wolfheze, Driel and the surrounding countryside from 17–26 September 1944....

 after being left essentially cut off.

To counter the tank threat, WWII infantry initially had few options other than the so-called "Molotov cocktail
Molotov cocktail
The Molotov cocktail, also known as the petrol bomb, gasoline bomb, Molotov bomb, fire bottle, fire bomb, or simply Molotov, is a generic name used for a variety of improvised incendiary weapons...

" (first used by Chinese troops against Japanese tanks around Shanghai in 1937) and anti-tank rifle
Anti-tank rifle
An anti-tank rifle is a rifle designed to penetrate the armour of vehicles, particularly tanks. The usefulness of rifles for this purpose ran from the introduction of tanks in World War I and until the Korean War...

. Neither was particularly effective, especially if armor was accompanied by supporting infantry. These, and later anti-tank mine
Anti-tank mine
An anti-tank mine, , is a type of land mine designed to damage or destroy vehicles including tanks and armored fighting vehicles....

s, some of which could be magnetically attached to the tank, required the user to get closer than was prudent. Later developments, such as the Bazooka
Bazooka
Bazooka is the common name for a man-portable recoilless rocket antitank weapon, widely fielded by the U.S. Army. Also referred to as the "Stovepipe", the innovative bazooka was amongst the first-generation of rocket propelled anti-tank weapons used in infantry combat...

, PIAT
PIAT
The Projector, Infantry, Anti Tank was a British hand-held anti-tank weapon developed during the Second World War. The PIAT was designed in 1942 in response to the British Army's need for a more effective infantry anti-tank weapon, and entered service in 1943.The PIAT was based on the spigot...

, and Panzerfaust
Panzerfaust
The Panzerfaust was an inexpensive, recoilless German anti-tank weapon of World War II. It consisted of a small, disposable preloaded launch tube firing a high explosive anti-tank warhead, operated by a single soldier...

, allowed a more effective attack against armor from a distance. Thus, especially in the ruined urban zones, tanks were forced to enter accompanied by squads of infantry.

Marines became prominent during the Pacific War
Pacific War
The Pacific War, also sometimes called the Asia-Pacific War refers broadly to the parts of World War II that took place in the Pacific Ocean, its islands, and in East Asia, then called the Far East...

. These soldiers were capable of amphibious warfare
Amphibious warfare
Amphibious warfare is the use of naval firepower, logistics and strategy to project military power ashore. In previous eras it stood as the primary method of delivering troops to non-contiguous enemy-held terrain...

 on a scale not previously known. As Naval Infantry, both Japanese and American Marines enjoyed the support of naval craft such as battleship
Battleship
A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were larger, better armed and armored than cruisers and destroyers. As the largest armed ships in a fleet, battleships were used to attain command of the sea and represented the apex of a...

s, cruiser
Cruiser
A cruiser is a type of warship. The term has been in use for several hundreds of years, and has had different meanings throughout this period...

s, and the newly-developed aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

s. As with conventional infantry, the Marines used radios to communicate with their supporting elements. They could call in sea and air bombardment very quickly.

The widespread availability of helicopters following WWII allowed the emergence of an air mobility tactics such as aerial envelopment.

Offensive tactics

Aggressive squad tactics were similar for both sides, though specifics in arms, numbers, and the subtleties of the doctrine differed. The main goal was to advance by means of fire and movement with minimal casualties while maintaining unit effectiveness and control.

The German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

squad would win the Feuerkampf (fire fight), then occupy key positions. The rifle
Rifleman
Although ultimately originating with the 16th century handgunners and the 17th century musketeers and streltsy, the term rifleman originated from the 18th century. It would later become the term for the archetypal common soldier.-History:...

 and machine gun
Machine gun
A machine gun is a fully automatic mounted or portable firearm, usually designed to fire rounds in quick succession from an ammunition belt or large-capacity magazine, typically at a rate of several hundred rounds per minute....

 teams were not separate, but part of the Gruppe, though men were often firing at will. Victory went to the side able to concentrate the most fire on target most quickly. Generally, soldiers were ordered to hold fire until the enemy was 600 metres (660 yards) or closer, when troops opened fire on mainly large targets; individuals were fired upon only from 400 meters (440yd) or below.

The German squad had two main formations while moving on the battlefield. When advancing in the Reihe, or single file, formation, the commander took the lead, followed by the machine gunner and his assistants, then riflemen, with the assistant squad commander moving on the rear. The Reihe moved mostly on tracks and it presented a small target on the front. In some cases, the machinegun could be deployed while the rest of the squad held back. In most cases, the soldiers took advantage of the terrain, keeping behind contours and cover, and running out into the open when there were none to be found.

A Reihe could easily be formed into Schützenkette, or skirmish line. The machinegun deployed on the spot, while riflemen came up on the right, left or both sides. The result was a ragged line with men about five paces apart, taking cover whenever available. In areas where resistance was serious, the squad executed "fire and movement". This was used either with the entire squad, or the machinegun team down while riflemen advanced. Commanders were often cautioned not to fire the machinegun until forced to do so by enemy fire. The object of the firefight was to not necessarily to destroy the enemy, but Niederkampfen - to beat down, silence, or neutralize them.

The final phases of an offensive squad action were the fire fight, advance, assault, and occupation of position:

The Fire Fight was the fire unit section. The section commander usually only commanded the light machine gun
Light machine gun
A light machine gun is a machine gun designed to be employed by an individual soldier, with or without an assistant, as an infantry support weapon. Light machine guns are often used as squad automatic weapons.-Characteristics:...

ner (LMG) to open fire upon the enemy. If much cover existed and good fire effect was possible, riflemen took part early. Most riflemen had to be on the front later to prepare for the assault. Usually, they fired individually unless their commander ordered them to focus on one target.

The Advance was the section that worked its way forward in a loose formation. Usually, the LMG formed the front of the attack. The farther the riflemen followed behind the LMG, the more easily the rear machine guns could shoot past them.

The Assault was the main offensive in the squad action. The commander made an assault whenever he was given the opportunity rather than being ordered to do so. The whole section was rushed into the assault while the commander lead the way. Throughout the assault, the enemy had to be engaged with the maximum rate of fire. The LMG took part in the assault, firing on the move. Using hand grenade
Hand grenade
A hand grenade is any small bomb that can be thrown by hand. Hand grenades are classified into three categories, explosive grenades, chemical and gas grenades. Explosive grenades are the most commonly used in modern warfare, and are designed to detonate after impact or after a set amount of time...

s, machine pistol
Machine pistol
A machine pistol is a handgun-style, often magazine-fed and self-loading firearm, capable of fully automatic or burst fire, and normally chambered for pistol cartridges. The term is a literal translation of Maschinenpistole, the German term for a hand-held automatic weapon...

s, rifles, pistols, and entrenching tools, the squad tried to break the enemy resistance. The squad had to reorganize quickly once the assault was over.

When occupying a position (The Occupation of Position), the riflemen group up into twos or threes around the LMG so they could hear the section commander.

The American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

squad's basic formations were very similar to that of the Germans. The U.S. squad column had the men strung out with the squad leader and BAR
Browning Automatic Rifle
The Browning Automatic Rifle was a family of United States automatic rifles and light machine guns used by the United States and numerous other countries during the 20th century. The primary variant of the BAR series was the M1918, chambered for the .30-06 Springfield rifle cartridge and designed...

 man in front with riflemen in a line behind them roughly 60 paces long. This formation was easily controlled and maneuvered and it was suitable for crossing areas open to artillery fire, moving through narrow covered routes, and for fast movement in woods, fog, smoke, and darkness.

The skirmish line was very similar to the Schützenkette formation. In it, the squad was deployed in a line roughly 60 paces long. It was suitable for short rapid dashes but was not easy to control. The squad wedge was an alternative to the skirmish line and was suitable for ready movement in any direction or for emerging from cover. Wedges were often used away from the riflemen's range of fire as it was much more vulnerable than the skirmish line.

In some instances, especially when a squad was working independently to seize an enemy position, the commander ordered the squad to attack in sub-teams. "Team Able", made up of two riflemen scouts, would locate the enemy; "Team Baker", composed of a BAR man and three riflemen, would open fire. "Team Charlie", made up of the squad leader and the last five riflemen, would make the assault. The assault is given whenever possible and without regard to the progress of the other squads. After the assault, the squad advanced, dodging for cover, and the bayonet
Bayonet
A bayonet is a knife, dagger, sword, or spike-shaped weapon designed to fit in, on, over or underneath the muzzle of a rifle, musket or similar weapon, effectively turning the gun into a spear...

s were fixed. They would move rapidly toward the enemy, firing and advancing in areas occupied by hostile soldiers. Such fire would usually be delivered in a standing position at a rapid rate. After taking the enemy's position, the commander would either order his squad to defend or continue the advance.

The British
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

method formations depended chiefly on the ground and the type of enemy fire that was encountered. Five squad formations were primarily used: blobs, single file, loose file, irregular arrowhead, and the extended line. The blob formation, first used in 1917, referred to ad hoc gatherings of 2 to 4 men, hidden as well as possible. The regular single file formation was only used in certain circumstances, such as when the squad was advancing behind a hedgerow. The loose file formation was a slightly more scattered line suitable for rapid movement, but vulnerable to enemy fire. Arrowheads could deploy rapidly from either flank and were hard to stop from the air. The Extended Line was perfect for the final assault, but it was vulnerable if fired upon from the flank.

The British squad would commonly break up into two groups for the attack. The Bren group consisted of the two-man Bren gun team and second in command that formed one element, while the main body of the riflemen with the squad commander formed another. The larger group that contained the commander was responsible for closing in on the enemy and advancing promptly when under fire. When under effective fire, riflemen went to fully fledged "fire and movement". The riflemen were ordered to fall to the ground as if they had been shot, and then crawl to a good firing position. They took rapid aim and fired independently until the squad commander called for cease fire. On some occasions the Bren group advanced by bounds, to a position where it could effectively commence fire, preferably at 90 degrees to the main assault. In this case both the groups would give each other cover fire. The final attack was made by the riflemen who were ordered to fire at the hip as they went in.

Defensive tactics

German defensive squad tactics stressed the importance of integration with larger plans and principles in posts scattered in depth. A Gruppe was expected to dig in at 30 to 40 meters (33-45yd) (the maximum that a squad leader could effectively oversee). Other cover such as single trees and crests were said to attract too much enemy fire and were rarely used. While digging, one member of the squad was to stand sentry. Gaps between dug-in squads may be left, but covered by fire. The placing of the machine gun was key to the German squad defence, which was given several alternative positions, usually being placed 50 meters (55yd) apart.

Pairs of soldiers were deployed in foxholes, trench
Trench
A trench is a type of excavation or depression in the ground. Trenches are generally defined by being deeper than they are wide , and by being narrow compared to their length ....

es, or ditches. The pair stood close together in order to communicate with each other. The small sub-sections would be slightly separated, thus decreasing the effect of enemy fire. If the enemy did not immediately mobilize, the second stage of defense, entrenching, was employed. These trenches were constructed behind the main line where soldiers could be kept back under cover until they were needed.

The defensive firefight was conducted by the machine gun at an effective range while riflemen were concealed in their foxholes until the enemy assault. Enemy grenades falling on the squad's position were avoided by diving away from the blast or by simply throwing or kicking the grenade back. This tactic was very dangerous and U.S. sources report American soldiers losing hands and feet this way.

In the latter part of the war, emphasis was put on defense against armored vehicles. Defensive positions were built on a "tank-proof obstacle" composed of at least one anti-tank weapon as well as artillery support directed by an observer. To intercept enemy tanks probing a defensive position, squads often patrolled with an anti-tank weapon.

Platoon tactics

This is a sub-unit of a company, comprising three sections with a platoon headquarters. The strength of standard infantry platoon varies between twenty five and thirty six.

Infantry entrenchment

During the Second World War, trenches, ditches, foxholes and dragon's teeth were used extensively.

After 1945

The Korean War
Korean War
The Korean War was a conventional war between South Korea, supported by the United Nations, and North Korea, supported by the People's Republic of China , with military material aid from the Soviet Union...

 was the first major conflict following World War II. New devices, including smaller radios and the helicopter
Helicopter
A helicopter is a type of rotorcraft in which lift and thrust are supplied by one or more engine-driven rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards, and laterally...

 were also introduced. Parachute drops, which tended to scatter a large number of men over the battlefield, were replaced by airmobile operations using helicopters to deliver men in a precise manner. Helicopters also provided fire support in many cases, and could be rushed to deliver precision strikes on the enemy. Thus, infantry were free to range far beyond the conventional fixed artillery positions. They could even operate behind enemy lines, and later be extracted by air. This led to the concept of vertical envelopment (originally conceived for airborne), in which the enemy is not flanked to the left or right, but rather from above.

Jungle Warfare

Jungle warfare was heavily shaped by the experiences of all the major powers in the Southeast Asian theater of operations during the Second World War.

Jungle terrain tended to break up and isolate units. It tended to fragment the battle. It called for greater independence and leadership among junior leaders, and all the major powers increased the level of training and experience level required for junior officers and NCOs.

But fights in which squad or platoon leaders found themselves fighting on their own also called for more firepower.

All the combatants, therefore, found ways to increase both the firepower of individual squads and platoons. The intent was to ensure that they could fight on their own … which often proved to be the case.

Japan, as one example, increased the number of heavy weapons in each squad.

The "strengthened" squad used from 1942 onwards was normally 15 men.

The Japanese squad contained one squad automatic weapon (a machinegun fed from a magazine and light enough to be carried by one gunner and an assistant ammunition bearer).

The squad's TO&E also included a grenade launcher team armed with what historians often mistakenly call a "knee mortar". This was in fact a light mortar of 50mm that threw high explosive, illumination and smoke rounds out to as much as 400 meters. Set on the ground and fired with arm outstretched, the operator varied the range by adjusting the height of the firing pin within the barrel (allowing the mortar to be fired through small holes in the jungle canopy).

A designated sniper was also part of the team, as was a grenadier with a rifle-grenade launcher.

The balance of the squad carried bolt-action rifles.

The result was that each squad was now a self-sufficient combat unit. Each squad had an automatic weapons capability. In a defensive role, the machinegun could be set to create a “beaten zone” of bullets through which no enemy could advance and survive. In an attack, it could throw out a hail of bullets to keep the opponent’s head down while friendly troops advanced.

The light mortar gave the squad leader an indirect "hip-pocket artillery" capability. It could fire high-explosive and fragmentation rounds to flush enemy out of dugouts and hides. It could fire smoke to conceal an advance, or illumination rounds to light up any enemy target at night.

The sniper gave the squad leader a long-range point-target-killing capability.

Four squads composed a platoon. There was no headquarters section, only the platoon leader and the platoon sergeant. In effect, the platoon could fight as four independent, self-contained battle units (a concept very similar to the US Ranger “chalks.”)

The British Army did extensive fighting in the jungles and rubber plantations of Malaya during the Emergency, and in Borneo against Indonesia during the Confrontation.

As a result of these experiences, the British increased the close-range firepower of their individual riflemen by replacing the pre-World War II bolt-action Lee-Enfield with lighter, automatic weapons like the American M-2 carbine and the Sterling submachine gun.

However, the British Army was already blessed in its possession of a good squad automatic weapon (the Bren) and these remained apportioned one per squad. They comprised the bulk of the squad’s firepower, even after the introduction of the self-loading rifle (a semi-automatic copy of the Belgian FN-FAL).

The British did not deploy a mortar on the squad level. However, there was one 2-inch mortar on the platoon level.

The US Army took a slightly different approach.

They believed the experience in Vietnam showed the value of smaller squads carrying a higher proportion of heavier weapons. The traditional 12-man squad armed with semi-automatic rifles and an automatic rifle was knocked down to 9 men: The squad leader carried the M-16 and AN/PRC-6 radio. He commanded two fire teams of four men apiece (each containing one team leader with M-16, grenadier with M-16/203, designated automatic rifleman with M-16 and bipod, and an anti-tank gunner with LAW and M-16).

Three squads composed a platoon along with two three-man machinegun teams (team leader with M-16, gunner with M-60 machinegun, and assistant gunner with M-16).

The addition of two M-60 machinegun teams created more firepower on the platoon level. The platoon leader could arrange these to give covering fire, using his remaining three squads as his maneuver element.

The M-16/203 combination was a particular American creation (along with its M-79 parent). It did not have the range of the Japanese 50 mm mortar. However, it was handier, and could still lay down indirect high-explosive fire, and provide support with both smoke and illumination rounds.

The US Army also had 60 mm mortar. This was a bigger, more capable weapon than the Japanese 50 mm weapon. But it was too heavy for use on the squad or even the platoon level. These were only deployed on the company level.

The deficiency of the US formation remained the automatic rifleman, a tradition that had gone back to the Browning Automatic Rifle (BAR) gunner of World War II. The US Army discovered that an automatic rifle was a poor substitute for a real machinegun. A rifle fired in the sustained automatic role easily overheated, and its barrel could not be changed. Post-Vietnam, the US Army adopted the Belgian Minimi to replace the automatic M-16. With an interchangeable barrel and larger magazine, this weapon provided the sustained automatic fire required.

The Republic of Singapore Army, whose experience is 100% in primary and secondary jungle as well as rubber plantation terrain, took the trend one step further. Their squad contained only seven men, but fielded two squad automatic gunners (with 5.56 mm squad automatic weapons), two grenadiers with M-16/203 under slung grenade launchers, and one anti-tank gunner with rocket launcher and assault rifle.

So in short, jungle warfare increased the number of short/sharp engagements on the platoon or even squad level. Platoon and squad leaders had to be more capable of independent action. To do this, each squad (or at least platoon) needed a balanced allocation of weapons that would allow it to complete its mission unaided.

Mountain warfare

During the Soviet war in Afghanistan
Soviet war in Afghanistan
The Soviet war in Afghanistan was a nine-year conflict involving the Soviet Union, supporting the Marxist-Leninist government of the Democratic Republic of Afghanistan against the Afghan Mujahideen and foreign "Arab–Afghan" volunteers...

, the Soviet Army
Soviet Army
The Soviet Army is the name given to the main part of the Armed Forces of the Soviet Union between 1946 and 1992. Previously, it had been known as the Red Army. Informally, Армия referred to all the MOD armed forces, except, in some cases, the Soviet Navy.This article covers the Soviet Ground...

 and Air Force
Soviet Air Force
The Soviet Air Force, officially known in Russian as Военно-воздушные силы or Voenno-Vozdushnye Sily and often abbreviated VVS was the official designation of one of the air forces of the Soviet Union. The other was the Soviet Air Defence Forces...

  fought forces called the Mujahideen
Mujahideen
Mujahideen are Muslims who struggle in the path of God. The word is from the same Arabic triliteral as jihad .Mujahideen is also transliterated from Arabic as mujahedin, mujahedeen, mudžahedin, mudžahidin, mujahidīn, mujaheddīn and more.-Origin of the concept:The beginnings of Jihad are traced...

. Although the Soviet Army had greater fire power
Fire power
Firepower is the military capability to direct force at an enemy. It is not to be confused with the concept of rate of fire, which describes cycling of the firing mechanism in a weapon system. It involves the whole range of potential weapons...

 and modern equipment than the Mujahideen, they were not able to completely destroy them because of the difficulty of countering guerrilla tactics in the mountains.

When the Stinger
FIM-92 Stinger
The FIM-92 Stinger is a personal portable infrared homing surface-to-air missile , which can be adapted to fire from ground vehicles and helicopters , developed in the United States and entered into service in 1981. Used by the militaries of the U.S...

 missile was supplied to the Mujahideen, they began to ambush Soviet helicopters and fixed wing aircraft in proximity of the military airfields. This was because the Stinger was only effective at a range of 15000 feet (4,572 m), requiring the Mujahideen to attack the aircraft as they were landing or taking off. The Stinger, however, was not the "weapon that won the war". Although it did have a significant effect on the conduct of war, it was not used to shoot down very many aircraft. It did force the Soviets to modify their helicopter tactics. Helicopters begun to cooperate more closely with the ground forces, fixed wing aircraft began flying at higher altitudes, and armor and anti-missile electronic defense systems were added to aircraft to help protect them from the Stinger.

The Soviets countered the Mujahideen tactics in various ways. The Spetsnaz
Spetsnaz
Spetsnaz, Specnaz tr: Voyska specialnogo naznacheniya; ) is an umbrella term for any special forces in Russian, literally "force of special purpose"...

were used extensively in special operations
Special operations
Special operations are military operations that are considered "special" .Special operations are typically performed independently or in conjunction with conventional military operations. The primary goal is to achieve a political or military objective where a conventional force requirement does...

 by being deployed by helicopter into areas identified as areas often transited by the Mujahideen , or sites of ambushes. Spetsnaz tactics were effective against Mujahideen because they employed tactics similar to those used by the Mujahideen; tanks and aircraft were comparatively less effective due to terrain and enemy mobility in it. The only technology with a significant impact on Mujahideen were land mine
Land mine
A land mine is usually a weight-triggered explosive device which is intended to damage a target—either human or inanimate—by means of a blast and/or fragment impact....

s and helicopters, although over time Mujahideen were able to find ways to avoid and evade both.

As the Soviet operations stalled, they began retaliating against the civilian population for supporting the Mujahideen. It was not uncommon for Soviet helicopters to raze
Raze
Raze may refer to:* Demolition* Raze, Haute-Saône, a town in France* Raze * Raze * Raze , a fictional character in the Underworld films* Raze , a made for TV film aired on syfy...

 an Afghan village in retaliation for an attack against Soviet soldiers. At other times they dropped mines
Land mine
A land mine is usually a weight-triggered explosive device which is intended to damage a target—either human or inanimate—by means of a blast and/or fragment impact....

 from aircraft in the field
Field (agriculture)
In agriculture, the word field refers generally to an area of land enclosed or otherwise and used for agricultural purposes such as:* Cultivating crops* Usage as a paddock or, generally, an enclosure of livestock...

s and pasture
Pasture
Pasture is land used for grazing. Pasture lands in the narrow sense are enclosed tracts of farmland, grazed by domesticated livestock, such as horses, cattle, sheep or swine. The vegetation of tended pasture, forage, consists mainly of grasses, with an interspersion of legumes and other forbs...

s, or shooting the livestock
Livestock
Livestock refers to one or more domesticated animals raised in an agricultural setting to produce commodities such as food, fiber and labor. The term "livestock" as used in this article does not include poultry or farmed fish; however the inclusion of these, especially poultry, within the meaning...

 with helicopter weapons. Without the support of the villagers, the Mujahideen were forced to carry their own food in addition to weapons and military supplies. Another common tactic was to cordon
Cordon
A cordon is also a line of people, military posts, or ships surrounding an area to close or guard it.Cordon may also refer to:* Cordon and search, a military operation...

 off and search villages for Mujahideen. These tactics were not unlike those used by the United States in Vietnam, or by the Germans against Soviet partisans in World War Two.

Conventional infantry tactics are generally modified before implementation in Mountain Warfare
Mountain warfare
Mountain warfare refers to warfare in the mountains or similarly rough terrain. This type of warfare is also called Alpine warfare, named after the Alps mountains...

 as the defending side generally has a decisive advantage over the attacking side by holding the heights and forcing the enemy to attack uphill against a fully prepared well entrenched position. So generally, frontal assault is avoided by implementation of blockade tactics and cutting off the supply lines, thereby creating a siege
Siege
A siege is a military blockade of a city or fortress with the intent of conquering by attrition or assault. The term derives from sedere, Latin for "to sit". Generally speaking, siege warfare is a form of constant, low intensity conflict characterized by one party holding a strong, static...

. This changed in the Kargil War
Kargil War
The Kargil War ,, also known as the Kargil conflict, was an armed conflict between India and Pakistan that took place between May and July 1999 in the Kargil district of Kashmir and elsewhere along the Line of Control...

 of 1999 when Indian forces were faced with the huge task of flushing out intruders and disguised Pakistani soldiers who had captured high mountain posts. Instead of employing blockade tactics, Indian Army
Indian Army
The Indian Army is the land based branch and the largest component of the Indian Armed Forces. With about 1,100,000 soldiers in active service and about 1,150,000 reserve troops, the Indian Army is the world's largest standing volunteer army...

 launched frontal assault against Pakistani Army positions but the tactics were intensely modified by employment of heavy artillery cover often firing in direct role and relentless air-strikes before the ground attack. As any daytime attack would be suicidal, all the attacks were made under the cover of darkness to minimize casualties. The operation took time but was successful and all the positions were recaptured by the Indian Army after two months of fighting.

17th Century

  • Dupuy, Trevor N., Colonel, U.S. Army. Evolution of Weapons and Warfare. Indianapolis: Bobbs-Merrill, 1980. ISBN 0-672-52050-8
  • Dyer, Gwynne. War. New York: Crown Publishers, 1985. ISBN 0-517-55615-4

World War II

  • World War II Infantry Tactics: Squad and Platoon, Dr Steven Bull, 2004 Osprey Ltd.
  • Dupuy, Trevor N., Colonel, U.S. Army. Evolution of Weapons and Warfare. Indianapolis: Bobbs-Merrill, 1980. ISBN 0-672-52050-8
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