The concept of four "generations" in the history of
modern warfare
Modern warfare is warfare that is in notable contrast with previous military concepts, methods, and technology, emphasizing how combatants must modernize to preserve their battle worthiness. As such, it is an evolving subject, seen different ...
was created by a team of
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
analysts, including
William S. Lind,
for the purpose of an argument for "the changing face of war" entering into a "fourth generation". The generations of warfare are sometimes dubbed as "4GW".
* First-generation warfare refers to
Ancient
Ancient history is a time period from the beginning of writing and recorded human history to as far as late antiquity. The span of recorded history is roughly 5,000 years, beginning with the Sumerian cuneiform script. Ancient history cov ...
and
Post-classical
In world history, post-classical history refers to the period from about 500 AD to 1500, roughly corresponding to the European Middle Ages. The period is characterized by the expansion of civilizations geographically and development of trade ...
battles fought with massed manpower, using
phalanx
The phalanx ( grc, φάλαγξ; plural phalanxes or phalanges, , ) was a rectangular mass military formation, usually composed entirely of heavy infantry armed with spears, pikes, sarissas, or similar pole weapons. The term is particularly ...
,
line and
column tactics with uniformed soldiers governed by the state. This generation came to an end around the mid-nineteenth century due to rapid improvements in the range, accuracy and rate-of-fire of many weapon systems.
* Second-generation warfare evolved after the invention of the
rifled musket and
breech-loading weapons and continuing through the development of the
machine gun
A machine gun is a fully automatic, rifled autoloading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles (including assault rifles and battle rifles) ar ...
and
indirect fire
Indirect fire is aiming and firing a projectile without relying on a direct line of sight between the gun and its target, as in the case of direct fire. Aiming is performed by calculating azimuth and inclination, and may include correcting aim ...
. This generation predates the widespread effective use of motorised vehicles in battle (such as tanks and planes) and
combined arms warfare. The term ''second generation warfare'' was created by the
U.S. military in 1989.
* Third-generation warfare focuses on using
Late modern technology-derived tactics of leveraging speed, stealth and surprise to bypass the enemy's lines and collapse their forces from the rear. Essentially, this was the end of linear warfare on a tactical level, with units seeking not simply to meet each other face to face but to outmaneuver each other to gain the greatest advantage. Armoured units, planes and paratroopers began to play an increasingly critical role in operations, with the development of strategies such as
Blitzkrieg and
Deep Battle
Deep operation (, ''glubokaya operatsiya''), also known as Soviet Deep Battle, was a military theory developed by the Soviet Union for its armed forces during the 1920s and 1930s. It was a tenet that emphasized destroying, suppressing or disorg ...
.
* Fourth-generation warfare as presented by Lind et al. is characterized by a "post-modern" return to
decentralized
Decentralization or decentralisation is the process by which the activities of an organization, particularly those regarding planning and decision making, are distributed or delegated away from a central, authoritative location or group.
Conce ...
forms of warfare, blurring of the lines between
war
War is an intense armed conflict between states, governments, societies, or paramilitary groups such as mercenaries, insurgents, and militias. It is generally characterized by extreme violence, destruction, and mortality, using regular o ...
and
politics
Politics (from , ) is the set of activities that are associated with making decisions in groups, or other forms of power relations among individuals, such as the distribution of resources or status. The branch of social science that stud ...
,
combatants
Combatant is the legal status of an individual who has the right to engage in hostilities during an armed conflict. The legal definition of "combatant" is found at article 43(2) of Additional Protocol I (AP1) to the Geneva Conventions of 1949. ...
and
civilians
Civilians under international humanitarian law are "persons who are not members of the armed forces" and they are not " combatants if they carry arms openly and respect the laws and customs of war". It is slightly different from a non-combatant ...
due to
nation state
A nation state is a political unit where the state and nation are congruent. It is a more precise concept than "country", since a country does not need to have a predominant ethnic group.
A nation, in the sense of a common ethnicity, may i ...
s' loss of their near-monopoly on combat forces, returning to modes of conflict common in pre-modern times. Guerrilla groups, private military contractors and paramilitary organisations play a prominent role in fourth-generation warfare.
*Fifth-generation warfare is conducted primarily through
non-kinetic military action, such as
social engineering,
misinformation
Misinformation is incorrect or misleading information. It differs from disinformation, which is ''deliberately'' deceptive. Rumors are information not attributed to any particular source, and so are unreliable and often unverified, but can turn ...
,
cyberattacks, along with emerging technologies such as
artificial intelligence
Artificial intelligence (AI) is intelligence—perceiving, synthesizing, and inferring information—demonstrated by machines, as opposed to intelligence displayed by animals and humans. Example tasks in which this is done include speech r ...
and fully
autonomous systems. Fifth generation warfare has been described by Daniel Abbot as a war of "information and perception".
First generation
![Hohenfriedeberg - Attack of Prussian Infantry - 1745](https://upload.wikimedia.org/wikipedia/commons/9/9a/Hohenfriedeberg_-_Attack_of_Prussian_Infantry_-_1745.jpg)
In 1648, at the end of the
Thirty Years' War
The Thirty Years' War was one of the longest and most destructive conflicts in European history, lasting from 1618 to 1648. Fought primarily in Central Europe, an estimated 4.5 to 8 million soldiers and civilians died as a result of battle ...
, the
Treaty of Westphalia
The Peace of Westphalia (german: Westfälischer Friede, ) is the collective name for two peace treaties signed in October 1648 in the Westphalian cities of Osnabrück and Münster. They ended the Thirty Years' War (1618–1648) and brought pea ...
gave a practical sovereignty to the
German states, which until then were semi-independent components of the
Holy Roman Empire
The Holy Roman Empire was a political entity in Western, Central, and Southern Europe that developed during the Early Middle Ages and continued until its dissolution in 1806 during the Napoleonic Wars.
From the accession of Otto I in 962 ...
. This more firmly established the sovereignty of the
nation-state, which meant, among other things, that governments would have exclusive rights to organize and maintain their own militaries. Before this time, many armies and nations were controlled by religious orders and many wars were fought in
mêlée
A melee ( or , French: mêlée ) or pell-mell is disorganized hand-to-hand combat in battles fought at abnormally close range with little central control once it starts. In military aviation, a melee has been defined as " air battle in which ...
combat, or subversively through bribery and assassination. The first generation of modern warfare was intended to create a straightforward and orderly means of waging war.
Alternatively, it has been argued that the Peace of Westphalia did not solidify the power of the nation-state, but that the Thirty Years' War itself ushered in an era of large-scale combat that was simply too costly for smaller mercenary groups to carry out on their own. According to this theory, smaller groups ''chose'' to leave mass combat—and the expenses associated with it—in the domain of the nation-state.
The increased accuracy and speed of the
rifled musket and the
breech-loader
A breechloader is a firearm in which the user loads the ammunition (cartridge or shell) via the rear (breech) end of its barrel, as opposed to a muzzleloader, which loads ammunition via the front ( muzzle).
Modern firearms are generally bre ...
marks the end of first generation warfare; the concept of vast lines of soldiers meeting face to face became impractical due to the heavy casualties that could be sustained. Because these technologies were adopted gradually throughout the Americas and Europe, the exact end of the first generation of modern warfare depends on the region, but all world powers had moved on by the latter half of the 19th century.
[
In order to create a more controlled environment for warfare a military culture was developed that, in many ways, is still visible in the armed forces of today. Specially crafted uniforms set soldiers apart from the general populace.
An elaborate structure of ]rank
Rank is the relative position, value, worth, complexity, power, importance, authority, level, etc. of a person or object within a ranking, such as:
Level or position in a hierarchical organization
* Academic rank
* Diplomatic rank
* Hierarchy
* ...
was developed to better organize men into units. Rules for military drill were perfected, allowing line and column maneuvers to be executed with more precision, and to increase the rate of fire in battle.
Control of media information release during the war and production of counterfeit money
Counterfeit money is currency produced without the legal sanction of a state or government, usually in a deliberate attempt to imitate that currency and so as to deceive its recipient. Producing or using counterfeit money is a form of fraud or fo ...
in order to devaluate enemy's economy were used for the first time during Napoleonic wars
The Napoleonic Wars (1803–1815) were a series of major global conflicts pitting the French Empire and its allies, led by Napoleon I, against a fluctuating array of European states formed into various coalitions. It produced a period of Fren ...
.
Examples:
*English Civil War
The English Civil War (1642–1651) was a series of civil wars and political machinations between Parliamentarians (" Roundheads") and Royalists led by Charles I ("Cavaliers"), mainly over the manner of England's governance and issues of re ...
* Anglo-Spanish War
*Seven Years' War
The Seven Years' War (1756–1763) was a global conflict that involved most of the European Great Powers, and was fought primarily in Europe, the Americas, and Asia-Pacific. Other concurrent conflicts include the French and Indian War (175 ...
*American Revolutionary War
The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of t ...
*Napoleonic Wars
The Napoleonic Wars (1803–1815) were a series of major global conflicts pitting the French Empire and its allies, led by Napoleon I, against a fluctuating array of European states formed into various coalitions. It produced a period of Fren ...
*War of 1812
The War of 1812 (18 June 1812 – 17 February 1815) was fought by the United States, United States of America and its Indigenous peoples of the Americas, indigenous allies against the United Kingdom of Great Britain and Ireland, United Kingdom ...
*Mexican War of Independence
The Mexican War of Independence ( es, Guerra de Independencia de México, links=no, 16 September 1810 – 27 September 1821) was an armed conflict and political process resulting in Mexico's independence from Spain. It was not a single, co ...
Second generation
In the 19th century, the invention of the breech-loading rifled musket meant longer range, greater accuracy, and faster rate of fire. Marching ranks of men straight into a barrage of fire from such weapons would cause tremendous rates of casualties, so a new strategy was developed.
Second generation warfare still maintained lines of battle but focused more on the use of technology to allow smaller units of men to maneuver separately. These smaller units allowed for faster advances, less concentrated casualties, and the ability to use cover and concealment to advantage.
To some degree, these concepts have remained in use even as the next generations have arisen, so the end of the second generation is not as clearly defined as that of the first. The development of the blitzkrieg highlighted some of the flaws of static firing positions and slow-moving infantry, so this can be considered the beginning of the end for the second generation, at least as the dominant force in military strategy.
The contributions of the second generation were responses to technological development. The second generation saw the rise of 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 ar ...
, artillery
Artillery is a class of heavy military ranged weapons that launch munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during siege ...
support, more advanced reconnaissance
In military operations, reconnaissance or scouting is the exploration of an area by military forces to obtain information about enemy forces, terrain, and other activities.
Examples of reconnaissance include patrolling by troops (skirmisher ...
techniques, extensive use of camouflage uniforms, radio
Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmi ...
communications, and fireteam
A fireteam or fire team is a small military sub-subunit of infantry designed to optimize " bounding overwatch" and " fire and movement" tactical doctrine in combat. Depending on mission requirements, a typical fireteam consists of four or f ...
maneuvers.
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 ...
*Boer War
The Second Boer War ( af, Tweede Vryheidsoorlog, , 11 October 189931 May 1902), also known as the Boer War, the Anglo–Boer War, or the South African War, was a conflict fought between the British Empire and the two Boer Republics (the Sou ...
*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 ...
*Spanish Civil War
The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlists, and The Rebellion ( es, La Rebelión, link ...
*Iran–Iraq War
The Iran–Iraq War was an armed conflict between Iran and Ba'athist Iraq, Iraq that lasted from September 1980 to August 1988. It began with the Iraqi invasion of Iran and lasted for almost eight years, until the acceptance of United Nations S ...
Third generation
The use of blitzkrieg during the German invasion of France
France has been invaded on numerous occasions, by foreign powers or rival French governments; there have also been unimplemented invasion plans.
* the 1746 War of the Austrian Succession, Austria-Italian forces supported by the British navy attemp ...
first demonstrated the power of speed and maneuverability over static artillery positions and trench defenses. Through the use of tank
A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armour, and good battlefield mobility provided by tracks and a powerful engi ...
s, mechanized infantry
Mechanized infantry are infantry units equipped with armored personnel carriers (APCs) or infantry fighting vehicles (IFVs) for transport and combat (see also mechanized force).
As defined by the United States Army, mechanized infantry is di ...
, and close air support, the Germans were able to quickly break through linear defenses and capture the rear.
The emphasis on maneuvering and speed to bypass enemy engagement remains a common strategy throughout the world, and collapsing an enemy's defenses by striking at deeper targets is—in a somewhat different way—a major strategy in fourth generation warfare
Fourth-generation warfare (4GW) is conflict characterized by a blurring of the lines between war and politics, combatants and civilians.
The term was first used in 1980 by a team of United States analysts, including William S. Lind, to describe ...
.
The contributions of the third generation were based on the concept of overcoming technological disadvantage through the use of clever strategy. As linear fighting came to an end, new ways of moving faster began to appear.
The emphasis on mobility moved from heavy armor to greater speed, the development of the helicopter
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes ...
allowed insertions in hostile territory, and advanced missile
In military terminology, a missile is a guided airborne ranged weapon capable of self-propelled flight usually by a jet engine or rocket motor. Missiles are thus also called guided missiles or guided rockets (when a previously unguided rocke ...
technology allowed forces to bypass enemy defenses and strike at targets from great distances.
The speed inherent in these methods necessitated a greater degree of independence allowed to the units on the front lines.
Greater trust needed to be placed in junior officers commanding sub-units by higher-ranking officers—a belief that they could adequately achieve their objectives without micromanagement from higher ranking commanders in command headquarters.
Smaller units were allowed greater decision flexibility to deal with changing situations on the ground, rather than have decisions made for them by commanders who were distant from the front. This began to break down the regimented culture of order that was so important in previous theoretical eras of military command and control
Command and control (abbr. C2) is a "set of organizational and technical attributes and processes ... hatemploys human, physical, and information resources to solve problems and accomplish missions" to achieve the goals of an organization or en ...
.
Examples:
*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 opposing ...
*Korean War
, date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...
*Vietnam War
The Vietnam War (also known by other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam a ...
*Persian Gulf War
The Gulf War was a 1990–1991 armed campaign waged by a Coalition of the Gulf War, 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Ba'athist Iraq, ...
* Invasion of Afghanistan
*Iraq War
{{Infobox military conflict
, conflict = Iraq War {{Nobold, {{lang, ar, حرب العراق (Arabic) {{Nobold, {{lang, ku, شەڕی عێراق ( Kurdish)
, partof = the Iraq conflict and the War on terror
, image ...
Fourth generation
Fourth-generation warfare is characterized by a blurring of the lines between war
War is an intense armed conflict between states, governments, societies, or paramilitary groups such as mercenaries, insurgents, and militias. It is generally characterized by extreme violence, destruction, and mortality, using regular o ...
and politics
Politics (from , ) is the set of activities that are associated with making decisions in groups, or other forms of power relations among individuals, such as the distribution of resources or status. The branch of social science that stud ...
, combatants
Combatant is the legal status of an individual who has the right to engage in hostilities during an armed conflict. The legal definition of "combatant" is found at article 43(2) of Additional Protocol I (AP1) to the Geneva Conventions of 1949. ...
and civilians
Civilians under international humanitarian law are "persons who are not members of the armed forces" and they are not " combatants if they carry arms openly and respect the laws and customs of war". It is slightly different from a non-combatant ...
. The term was first used in 1989 by a team of United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
analysts, including William S. Lind, to describe war
War is an intense armed conflict between states, governments, societies, or paramilitary groups such as mercenaries, insurgents, and militias. It is generally characterized by extreme violence, destruction, and mortality, using regular o ...
fare's return to a decentralized
Decentralization or decentralisation is the process by which the activities of an organization, particularly those regarding planning and decision making, are distributed or delegated away from a central, authoritative location or group.
Conce ...
form. In terms of generational modern warfare, the fourth generation signifies the nation state
A nation state is a political unit where the state and nation are congruent. It is a more precise concept than "country", since a country does not need to have a predominant ethnic group.
A nation, in the sense of a common ethnicity, may i ...
s' loss of their near-monopoly on combat forces, returning to modes of conflict common in pre-modern times.
The simplest definition includes any war in which one of the major participants is not a state
State may refer to:
Arts, entertainment, and media Literature
* ''State Magazine'', a monthly magazine published by the U.S. Department of State
* ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States
* ''Our S ...
but rather a violent non-state actor
In international relations, violent non-state actors (VNSAs), also known as non-state armed actors or non-state armed groups (NSAGs), are individuals or groups that are wholly or partly independent of governments and which threaten or use viole ...
. Classical examples, such as the slave uprising under Spartacus or the mercenary uprising that occurred in Carthage after the first Punic War, predate the modern concept of warfare and are examples of this type of conflict.
Fourth generation warfare is defined as conflicts which involve the following elements:
* Are complex and long term
* Terrorism
Terrorism, in its broadest sense, is the use of criminal violence to provoke a state of terror or fear, mostly with the intention to achieve political or religious aims. The term is used in this regard primarily to refer to intentional violen ...
(tactic)
* A non-national or transnational base – highly decentralized
* A direct attack on the enemy's core ideals
* Highly sophisticated psychological warfare
Psychological warfare (PSYWAR), or the basic aspects of modern psychological operations (PsyOp), have been known by many other names or terms, including Military Information Support Operations (MISO), Psy Ops, political warfare, "Hearts and M ...
, especially through media manipulation and lawfare
* All available pressures are used – political, economic, social and military
* Occurs in low intensity conflict
A low-intensity conflict (LIC) is a military conflict, usually localised, between two or more state or non-state groups which is below the intensity of conventional war. It involves the state's use of military forces applied selectively and with ...
, involving actors from all networks
* Non-combatants are tactical dilemmas
* Lack of hierarchy
* Small in size, spread out network of communication and financial support
* Use of insurgency
An insurgency is a violent, armed rebellion against authority waged by small, lightly armed bands who practice guerrilla warfare from primarily rural base areas. The key descriptive feature of insurgency is its asymmetric nature: small irr ...
and guerrilla tactics
Guerrilla warfare is a form of irregular warfare in which small groups of combatants, such as paramilitary personnel, armed civilians, or irregulars, use military tactics including ambushes, sabotage, raids, petty warfare, hit-and-run ta ...
Fourth-generation warfare theory has been criticized on the grounds that it is "nothing more than repackaging of the traditional clash between the non-state insurgent and the soldiers of a nation-state."
Fifth generation
Fifth-generation warfare (5GW) is warfare that is conducted primarily through non-kinetic military action, such as social engineering, misinformation
Misinformation is incorrect or misleading information. It differs from disinformation, which is ''deliberately'' deceptive. Rumors are information not attributed to any particular source, and so are unreliable and often unverified, but can turn ...
, cyberattacks, along with emerging technologies such as artificial intelligence
Artificial intelligence (AI) is intelligence—perceiving, synthesizing, and inferring information—demonstrated by machines, as opposed to intelligence displayed by animals and humans. Example tasks in which this is done include speech r ...
and fully autonomous systems. Fifth generation warfare has been described by Daniel Abbot as a war of "information and perception".
Definition
There is no widely agreed upon definition of fifth-generation warfare, and it has been rejected by some scholars, including William S. Lind, who was one of the original theorists of fourth-generation warfare
Fourth-generation warfare (4GW) is conflict characterized by a blurring of the lines between war and politics, combatants and civilians.
The term was first used in 1980 by a team of United States analysts, including William S. Lind, to describe ...
.
The term 'fifth-generation warfare' was first used in 2003 by Robert Steele. The following year, Lind criticised the concept, arguing that the fourth generation had yet to fully materialize.
In 2008, the term was used by Terry Terriff, who presented the 2003 ricin letters as a potential example, but stated that he was not entirely sure if it was a fifth-generation attack, claiming "we may not recognize it as it resolves around us. Or we might look at several alternative futures and see each as fifth generation." Terriff argued that while fifth-generation warfare allows "super-empowered individuals" to make political statements through terrorism
Terrorism, in its broadest sense, is the use of criminal violence to provoke a state of terror or fear, mostly with the intention to achieve political or religious aims. The term is used in this regard primarily to refer to intentional violen ...
, they lack the political power to actually have their demands met.
L.C. Rees described the nature of fifth generation warfare as difficult to define in itself, alluding to the third law of science fiction author Arthur C. Clarke – "any sufficiently advanced technology is indistinguishable from magic."
Characteristics
Alex P. Schmid said that fifth-generation warfare is typified by its "omnipresent battlefield", and the fact that people engaged in it do not necessarily use military force, instead employing a mixture of kinetic and non-kinetic force. In the 1999 book ''Unrestricted Warfare
''Unrestricted Warfare: Two Air Force Senior Colonels on Scenarios for War and the Operational Art in an Era of Globalization'' () is a book on military strategy written in 1999 by two colonels in the People's Liberation Army (PLA), Qiao Liang ...
'' by colonels Qiao Liang and Wang Xiangsui of the People's Liberation Army, they noted that in the years since the 1991 Gulf War
The Gulf War was a 1990–1991 armed campaign waged by a Coalition of the Gulf War, 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Ba'athist Iraq, ...
, conventional military violence had decreased, which correlated to an increase in "“political, economic, and technological violence”, which they argued could be more devastating than a conventional war. On the contrary, Thomas P. M. Barnett, believes that the effectiveness of fifth-generational warfare is exaggerated, as terrorism conducted by individuals, such as Timothy McVeigh
Timothy James McVeigh (April 23, 1968 – June 11, 2001) was an American domestic terrorist responsible for the 1995 Oklahoma City bombing that killed 168 people, 19 of whom were children, injured more than 680 others, and destroyed one-third ...
or Ted Kaczynski
Theodore John Kaczynski ( ; born May 22, 1942), also known as the Unabomber (), is an American domestic terrorist and former mathematics professor. Between 1978 and 1995, Kaczynski killed three people and injured 23 others in a nationwide ...
, lacks the support of more organized movements. This was seconded by George Michael, who noted that in the United States, gang violence was responsible for far more deaths than lone wolf terrorist attacks.
References
{{DEFAULTSORT:Generation warfare 02
Warfare by type
Military doctrines