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A world war is an international conflict that involves most or all of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century,
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
(1914–1918) and
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
(1939–1945), although some historians have also characterized other global conflicts as world wars, such as the
Nine Years' War The Nine Years' War was a European great power conflict from 1688 to 1697 between Kingdom of France, France and the Grand Alliance (League of Augsburg), Grand Alliance. Although largely concentrated in Europe, fighting spread to colonial poss ...
, the
War of the Spanish Succession The War of the Spanish Succession was a European great power conflict fought between 1701 and 1714. The immediate cause was the death of the childless Charles II of Spain in November 1700, which led to a struggle for control of the Spanish E ...
, the
Seven Years' War The Seven Years' War, 1756 to 1763, was a Great Power conflict fought primarily in Europe, with significant subsidiary campaigns in North America and South Asia. The protagonists were Kingdom of Great Britain, Great Britain and Kingdom of Prus ...
, the
French Revolutionary and Napoleonic Wars The French Revolutionary and Napoleonic Wars (sometimes called the Great French War or the Wars of the Revolution and the Empire) were a series of conflicts between the French and several European monarchies between 1792 and 1815. They encompas ...
, the
Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
, and the War on terror.


Etymology

The ''
Oxford English Dictionary The ''Oxford English Dictionary'' (''OED'') is the principal historical dictionary of the English language, published by Oxford University Press (OUP), a University of Oxford publishing house. The dictionary, which published its first editio ...
'' had cited the first known usage in the
English language English is a West Germanic language that developed in early medieval England and has since become a English as a lingua franca, global lingua franca. The namesake of the language is the Angles (tribe), Angles, one of the Germanic peoples th ...
to a
Scottish Scottish usually refers to something of, from, or related to Scotland, including: *Scottish Gaelic, a Celtic Goidelic language of the Indo-European language family native to Scotland *Scottish English *Scottish national identity, the Scottish ide ...
newspaper, ''The People's Journal'', in 1848: "A war among the great powers is now necessarily a world-war." The term "world war" is used by
Karl Marx Karl Marx (; 5 May 1818 – 14 March 1883) was a German philosopher, political theorist, economist, journalist, and revolutionary socialist. He is best-known for the 1848 pamphlet '' The Communist Manifesto'' (written with Friedrich Engels) ...
and his associate,
Friedrich Engels Friedrich Engels ( ;"Engels"
''Random House Webster's Unabridged Dictionary''.
Rasmus B. Anderson Rasmus Bjørn Anderson (January 12, 1846 – March 2, 1936) was an American author, professor, editor, businessman and diplomat. He brought to popular attention the fact that Viking explorers were the first Europeans to arrive in the New World ...
in 1889 described an episode in
Teutonic mythology Germanic paganism or Germanic religion refers to the traditional, culturally significant religion of the Germanic peoples. With a chronological range of at least one thousand years in an area covering Scandinavia, the British Isles, modern Ge ...
as a "world war" (Swedish: ''världskrig''), justifying this description by a line in an
Old Norse Old Norse, also referred to as Old Nordic or Old Scandinavian, was a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants ...
epic poem, "
Völuspá ''Völuspá'' (also ''Vǫluspá'', ''Vǫlospá'', or ''Vǫluspǫ́''; Old Norse: 'Prophecy of the völva, a seeress') is the best known poem of the ''Poetic Edda''. It dates back to the tenth century and tells the story from Norse Mythology of ...
: folcvig fyrst I heimi" ("The first great war in the world"). German writer August Wilhelm Otto Niemann used the term "world war" in the title of his anti-British novel, ''Der Weltkrieg: Deutsche Träume'' (''The World War: German Dreams'') in 1904, published in English as ''The Coming Conquest of England''. The term "first world war" was first used in September 1914 by German biologist and philosopher
Ernst Haeckel Ernst Heinrich Philipp August Haeckel (; ; 16 February 1834 – 9 August 1919) was a German zoologist, natural history, naturalist, eugenics, eugenicist, Philosophy, philosopher, physician, professor, marine biology, marine biologist and artist ...
, who claimed that "there is no doubt that the course and character of the feared 'European War' ... will become the first world war in the full sense of the word", citing a wire service report in the ''
Indianapolis Star Indianapolis ( ), colloquially known as Indy, is the capital and most populous city of the U.S. state of Indiana and the county seat of Marion County. Indianapolis is situated in the state's central till plain region along the west fork of ...
'' on 20 September 1914. In English, the term "First World War" had been used by Lieutenant Colonel
Charles à Court Repington Charles à Court Repington, (29 January 1858 – 25 May 1925), known until 1903 as Charles à Court, was an English soldier, who went on to have a second career as an influential war correspondent during the First World War. He is also credited ...
, as a title for his memoirs (published in 1920); he had noted his discussion on the matter with a Major Johnstone of
Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma ...
in his diary entry of September 10, 1918. The term "World War I" was coined by ''
Time Time is the continuous progression of existence that occurs in an apparently irreversible process, irreversible succession from the past, through the present, and into the future. It is a component quantity of various measurements used to sequ ...
'' magazine on page 28 of its June 12, 1939, issue. In the same article, on page 32, the term "World WarII" was first used speculatively to describe the upcoming war. The first use for the actual war came in its issue of September 11, 1939. One week earlier, on September 4, the day after France and the United Kingdom declared war on Germany, the Danish newspaper ''
Kristeligt Dagblad ''Kristeligt Dagblad'' is a Danish newspaper in Copenhagen. The paper was founded in 1896 and is still circulation in the 2000s. It was founded with a Christian orientation. History and profile ''Kristeligt Dagblad'' was established in 1896. It ...
'' used the term on its front page, saying "The Second World War broke out yesterday at 11 a.m."
Speculative fiction Speculative fiction is an umbrella term, umbrella genre of fiction that encompasses all the subgenres that depart from Realism (arts), realism, or strictly imitating everyday reality, instead presenting fantastical, supernatural, futuristic, or ...
authors had been noting the concept of a Second World War in 1919 and 1920, when
Milo Hastings Milo Milton Hastings (June 28, 1884 – February 25, 1957) was an American inventor, author, and nutritionist. He invented the forced-draft chicken incubator and Weeniwinks, a health-food snack. He wrote about chickens, science fiction, and h ...
wrote his
dystopian A dystopia (lit. "bad place") is an imagined world or society in which people lead wretched, dehumanized, fearful lives. It is an imagined place (possibly state) in which everything is unpleasant or bad, typically a totalitarian or environmenta ...
novel, ''City of Endless Night''. Other languages have also adopted the "world war" terminology; for example, in
French French may refer to: * Something of, from, or related to France ** French language, which originated in France ** French people, a nation and ethnic group ** French cuisine, cooking traditions and practices Arts and media * The French (band), ...
, "world war" is translated as ; in
German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...
, (which, prior to the war, had been used in the more abstract meaning of a global conflict); in
Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance languag ...
, ; in
Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many countries in the Americas **Spanish cuisine **Spanish history **Spanish culture ...
and Portuguese, ; in Danish and Norwegian, ; in
Polish Polish may refer to: * Anything from or related to Poland, a country in Europe * Polish language * Polish people, people from Poland or of Polish descent * Polish chicken * Polish brothers (Mark Polish and Michael Polish, born 1970), American twin ...
; in
Russian Russian(s) may refer to: *Russians (), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *A citizen of Russia *Russian language, the most widely spoken of the Slavic languages *''The Russians'', a b ...
, (); and in Finnish, .


History


First World War

The First World War occurred from 1914 to 1918. In terms of human technological history, the scale of World WarI was enabled by the technological advances of the
Second Industrial Revolution The Second Industrial Revolution, also known as the Technological Revolution, was a phase of rapid Discovery (observation), scientific discovery, standardisation, mass production and industrialisation from the late 19th century into the early ...
and the resulting
globalization Globalization is the process of increasing interdependence and integration among the economies, markets, societies, and cultures of different countries worldwide. This is made possible by the reduction of barriers to international trade, th ...
that allowed global power projection and
mass production Mass production, also known as mass production, series production, series manufacture, or continuous production, is the production of substantial amounts of standardized products in a constant flow, including and especially on assembly lines ...
of military hardware. It had been recognized that the complex system of opposing
military alliance A military alliance is a formal Alliance, agreement between nations that specifies mutual obligations regarding national security. In the event a nation is attacked, members of the alliance are often obligated to come to their defense regardless ...
s (the
German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...
and
Austro-Hungarian Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe between 1867 and 1918. A military and diplomatic alliance, it consist ...
Empires against the
British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories and Crown Dependencies. * British national identity, the characteristics of British people and culture ...
,
Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance languag ...
,
Russian Russian(s) may refer to: *Russians (), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *A citizen of Russia *Russian language, the most widely spoken of the Slavic languages *''The Russians'', a b ...
, and
French French may refer to: * Something of, from, or related to France ** French language, which originated in France ** French people, a nation and ethnic group ** French cuisine, cooking traditions and practices Arts and media * The French (band), ...
Empires) was likely, if war broke out, to lead to a worldwide conflict. That caused a very minute conflict between two countries to have the potential to set off a
domino effect A domino effect is the cumulative effect produced when one event sets off a series of similar or related events, a form of chain reaction. The term is an analogy to a falling row of dominoes. It typically refers to a linked sequence of events ...
of alliances, triggering a world war. The fact that the powers involved had large
overseas empires Overseas may refer to: *Diaspora, a scattered population whose origin lies in a separate locale *Expatriate, a person residing in a country other than their native country ** Overseas Chinese ** Overseas Citizenship of India ** Overseas Filipinos ...
virtually guaranteed that such a war would be worldwide, as the colonies' resources would be a crucial strategic factor. The same strategic considerations also ensured that the combatants would strike at each other's colonies, thus spreading the wars far more widely than those of
pre-Columbian In the history of the Americas, the pre-Columbian era, also known as the pre-contact era, or as the pre-Cabraline era specifically in Brazil, spans from the initial peopling of the Americas in the Upper Paleolithic to the onset of European col ...
times.
War crimes A war crime is a violation of the laws of war that gives rise to individual criminal responsibility for actions by combatants in action, such as intentionally killing civilians or intentionally killing prisoners of war, torture, taking hos ...
were perpetrated in World War I.
Chemical weapons A chemical weapon (CW) is a specialized munition that uses chemicals formulated to inflict death or harm on humans. According to the Organisation for the Prohibition of Chemical Weapons (OPCW), this can be any chemical compound intended as ...
were used in the war despite the
Hague Conventions of 1899 and 1907 The Hague Conventions of 1899 and 1907 are a series of international treaties and declarations negotiated at two international peace conferences at The Hague in the Netherlands. Along with the Geneva Conventions, the Hague Conventions were amon ...
having outlawed the use of such weapons in warfare. The
Ottoman Empire The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
was responsible for the
Armenian genocide The Armenian genocide was the systematic destruction of the Armenians, Armenian people and identity in the Ottoman Empire during World War I. Spearheaded by the ruling Committee of Union and Progress (CUP), it was implemented primarily t ...
, during the First World War, as well as other war crimes.


Second World War

The Second World War occurred from 1939 to 1945 and is the only conflict in which
nuclear weapons A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either nuclear fission, fission (fission or atomic bomb) or a combination of fission and nuclear fusion, fusion reactions (thermonuclear weap ...
have been used; both
Hiroshima is the capital of Hiroshima Prefecture in Japan. , the city had an estimated population of 1,199,391. The gross domestic product (GDP) in Greater Hiroshima, Hiroshima Urban Employment Area, was US$61.3 billion as of 2010. Kazumi Matsui has b ...
and
Nagasaki , officially , is the capital and the largest Cities of Japan, city of Nagasaki Prefecture on the island of Kyushu in Japan. Founded by the Portuguese, the port of Portuguese_Nagasaki, Nagasaki became the sole Nanban trade, port used for tr ...
, in the
Japanese Empire The Empire of Japan, also known as the Japanese Empire or Imperial Japan, was the Japanese nation state that existed from the Meiji Restoration on January 3, 1868, until the Constitution of Japan took effect on May 3, 1947. From 1910 to ...
, were devastated by atomic bombs dropped by the United States. The main Axis powers were
Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
, the
Empire of Japan The Empire of Japan, also known as the Japanese Empire or Imperial Japan, was the Japanese nation state that existed from the Meiji Restoration on January 3, 1868, until the Constitution of Japan took effect on May 3, 1947. From Japan–Kor ...
, and the
Kingdom of Italy The Kingdom of Italy (, ) was a unitary state that existed from 17 March 1861, when Victor Emmanuel II of Kingdom of Sardinia, Sardinia was proclamation of the Kingdom of Italy, proclaimed King of Italy, until 10 June 1946, when the monarchy wa ...
; while the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
, the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
and
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
were the " Big Four" Allied powers.
Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
, led by
Adolf Hitler Adolf Hitler (20 April 1889 – 30 April 1945) was an Austrian-born German politician who was the dictator of Nazi Germany from 1933 until Death of Adolf Hitler, his suicide in 1945. Adolf Hitler's rise to power, He rose to power as the lea ...
, was responsible for
genocides Genocide is violence that targets individuals because of their membership of a group and aims at the destruction of a people. Raphael Lemkin, who first coined the term, defined genocide as "the destruction of a nation or of an ethnic group" by ...
, most notably
the Holocaust The Holocaust (), known in Hebrew language, Hebrew as the (), was the genocide of History of the Jews in Europe, European Jews during World War II. From 1941 to 1945, Nazi Germany and Collaboration with Nazi Germany and Fascist Italy ...
, which murdered demographics considered
Untermensch ''Untermensch'' (; plural: ''Untermenschen'') is a German language word literally meaning 'underman', 'sub-man', or ' subhuman', which was extensively used by Germany's Nazi Party to refer to their opponents and non- Aryan people they deemed ...
by the Nazis. These included about six million
Jews Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...
and about five million others, such as
Slavs The Slavs or Slavic people are groups of people who speak Slavic languages. Slavs are geographically distributed throughout the northern parts of Eurasia; they predominantly inhabit Central Europe, Eastern Europe, Southeastern Europe, and ...
,
Roma Roma or ROMA may refer to: People, characters, figures, names * Roma or Romani people, an ethnic group living mostly in Europe and the Americas. * Roma called Roy, ancient Egyptian High Priest of Amun * Roma (footballer, born 1979), born ''Paul ...
,
homosexuals Homosexuality is romantic attraction, sexual attraction, or sexual behavior between people of the same sex or gender. As a sexual orientation, homosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" exc ...
, and the physically and mentally disabled. The
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
, and
Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
deported and
interned Internment is the imprisonment of people, commonly in large groups, without Criminal charge, charges or Indictment, intent to file charges. The term is especially used for the confinement "of enemy citizens in wartime or of terrorism suspects ...
minority groups within their own borders and, largely because of the conflict, many ethnic
Germans Germans (, ) are the natives or inhabitants of Germany, or sometimes more broadly any people who are of German descent or native speakers of the German language. The Basic Law for the Federal Republic of Germany, constitution of Germany, imple ...
were later expelled from
Eastern Europe Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural and socio-economic connotations. Its eastern boundary is marked by the Ural Mountain ...
. Japan was responsible for attacking neutral nations without a
declaration of war A declaration of war is a formal act by which one state announces existing or impending war activity against another. The declaration is a performative speech act (or the public signing of a document) by an authorized party of a national gov ...
, such as the
attack on Pearl Harbor The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Empire of Japan on the United States Pacific Fleet at Naval Station Pearl Harbor, its naval base at Pearl Harbor on Oahu, Territory of ...
. It is also known for its brutal treatment and killing of Allied
prisoners of war A prisoner of war (POW) is a person held captive by a belligerent power during or immediately after an armed conflict. The earliest recorded usage of the phrase "prisoner of war" dates back to 1610. Belligerents hold prisoners of war for a ...
and the inhabitants of
Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...
. It also used Asians as forced laborers and was responsible for the
Nanjing Massacre The Nanjing Massacre, or the Rape of Nanjing (formerly Chinese postal romanization, romanized as ''Nanking'') was the mass murder of Chinese civilians, noncombatants, and surrendered prisoners of war by the Imperial Japanese Army in Nanji ...
in which 250,000 civilians were brutally murdered by Japanese troops.
Noncombatants Non-combatant is a term of art in the law of war and international humanitarian law to refer to civilians who are not taking a direct part in hostilities. People such as combat medics and military chaplains, who are members of the belligerent arm ...
suffered at least as badly as or worse than
combatants Combatant is the legal status of a person entitled to directly participate in hostilities during an armed conflict, and may be intentionally targeted by an adverse party for their participation in the armed conflict. Combatants are not afforded i ...
, and the distinction between combatants and noncombatants was often blurred by the belligerents of
total war Total war is a type of warfare that includes any and all (including civilian-associated) resources and infrastructure as legitimate military targets, mobilises all of the resources of society to fight the war, and gives priority to warfare ov ...
in both conflicts. The outcome of the war had a profound effect on the course of
world history Human history or world history is the record of humankind from prehistory to the present. Early modern human, Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers. They Early expansions of hominin ...
. The old European empires collapsed or they were dismantled as a direct result of the crushing costs of the war and in some cases, their fall was caused by the defeat of imperial powers. The
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
became firmly established as the dominant global
superpower Superpower describes a sovereign state or supranational union that holds a dominant position characterized by the ability to Sphere of influence, exert influence and Power projection, project power on a global scale. This is done through the comb ...
, along with its close competitor and ideological foe, the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
. The two superpowers exerted political influence over most of the world's
nation-states A nation state, or nation-state, is a political entity in which the state (a centralized political organization ruling over a population within a territory) and the nation (a community based on a common identity) are (broadly or ideally) con ...
for decades after the end of the Second World War. The modern international security, economic, and diplomatic system was created in the aftermath of the war. Institutions such as the
United Nations The United Nations (UN) is the Earth, global intergovernmental organization established by the signing of the Charter of the United Nations, UN Charter on 26 June 1945 with the stated purpose of maintaining international peace and internationa ...
were established to collectivize international affairs, with the explicit goal of preventing another outbreak of general war. The wars had also greatly changed the course of daily life. Technologies developed during wartime had a profound effect on peacetime life as well, such as through advances in
jet aircraft A jet aircraft (or simply jet) is an aircraft (nearly always a fixed-wing aircraft) propelled by one or more jet engines. Whereas the engines in Propeller (aircraft), propeller-powered aircraft generally achieve their maximum efficiency at much ...
,
penicillin Penicillins (P, PCN or PEN) are a group of beta-lactam antibiotic, β-lactam antibiotics originally obtained from ''Penicillium'' Mold (fungus), moulds, principally ''Penicillium chrysogenum, P. chrysogenum'' and ''Penicillium rubens, P. ru ...
,
nuclear energy Nuclear energy may refer to: *Nuclear power, the use of sustained nuclear fission or nuclear fusion to generate heat and electricity *Nuclear binding energy, the energy needed to fuse or split a nucleus of an atom *Nuclear potential energy, the pot ...
, and
electronic computers A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (''computation''). Modern digital electronic computers can perform generic sets of operations known as ''programs'', wh ...
.


Potential third world war

Since the
atomic bombings of Hiroshima and Nagasaki On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki, respectively, during World War II. The aerial bombings killed between 150,000 and 246,000 people, most of whom were civili ...
during the Second World War, there has been a widespread and prolonged fear of a potential third world war between nuclear-armed powers.Biggs, Lindy and Hansen, James (editors), 2004, ''Readings in Technology and Civilisation'', .Worland, Rick, 2006, ''The Horror Film: An Introduction'', Blackwell Publishing, . It is often suggested that it would become a
nuclear war Nuclear warfare, also known as atomic warfare, is a War, military conflict or prepared Policy, political strategy that deploys nuclear weaponry. Nuclear weapons are Weapon of mass destruction, weapons of mass destruction; in contrast to conven ...
, and be more devastating and violent than both the First and Second World Wars.
Albert Einstein Albert Einstein (14 March 187918 April 1955) was a German-born theoretical physicist who is best known for developing the theory of relativity. Einstein also made important contributions to quantum mechanics. His mass–energy equivalence f ...
is often quoted as having said in 1947 "I know not with what weapons World WarIII will be fought, but World WarIV will be fought with sticks and stones." It has been anticipated and planned for by military and civil authorities, and it has also been explored in fiction. Scenarios have ranged from conventional warfare to limited or total nuclear warfare. Various former government officials, politicians, authors, and military leaders (including
James Woolsey Robert James Woolsey Jr. (born September 21, 1941) is an American lawyer who has served in various senior positions. He headed the Central Intelligence Agency as Director of Central Intelligence from February 5, 1993, until January 10, 1995. He ...
,
Alexandre de Marenches Count Alexandre de Marenches (7 June 19212 June 1995) was a French military officer, a director of the SDECE French external intelligence services (6 November 1970 – 12 June 1981), special advisor to US President Ronald Reagan, and a member of ...
,Book regarding alleged WWIV
Eliot Cohen Eliot Asher Cohen (born April 3, 1956) is an American political scientist. He was a counselor in the United States Department of State under Condoleezza Rice from 2007 to 2009. In 2019, Cohen was named the 9th Dean of the Paul H. Nitze School of ...
,Why war on terrorism should be called WWIV and
Subcomandante Marcos Rafael Sebastián Guillén Vicente (born 19 June 1957) is a Mexican insurgent, the former military leader and spokesman for the Zapatista Army of National Liberation (EZLN) in the ongoing Chiapas conflict,Pasztor, S. B. (2004). "Marcos, Subcoman ...
) have attempted to apply the labels of the "Third World War" and the "Fourth World War" to various past and present global wars since the end of the Second World War, such as the
Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
and the War on terror respectively. During the early 21st century, the ongoing armed conflicts that are taking place around the world, and their worldwide spillovers are sometimes described as
proxy war In political science, a proxy war is an armed conflict where at least one of the belligerents is directed or supported by an external third-party power. In the term ''proxy war'', a belligerent with external support is the ''proxy''; both bel ...
s waged by the United States and Russia, which led some commentators to characterize the situation as a "proto-world war", with many countries embroiled in overlapping conflicts.


Other global conflicts

The
Seven Years' War The Seven Years' War, 1756 to 1763, was a Great Power conflict fought primarily in Europe, with significant subsidiary campaigns in North America and South Asia. The protagonists were Kingdom of Great Britain, Great Britain and Kingdom of Prus ...
(1754/56–1763) was fought across all of North America, Europe, Asia, Africa, and South America. Most of the great powers of the era participated, notably including the
British Empire The British Empire comprised the dominions, Crown colony, colonies, protectorates, League of Nations mandate, mandates, and other Dependent territory, territories ruled or administered by the United Kingdom and its predecessor states. It bega ...
and French Empire, but polities from many continents played important roles. Some historians call it "World War 0" as a result. Historians like Richard F. Hamilton and Holger H. Herwig created a list of eight world wars, including the two generally agreed-upon world wars, the Seven Years' War, and five others: the
Nine Years' War The Nine Years' War was a European great power conflict from 1688 to 1697 between Kingdom of France, France and the Grand Alliance (League of Augsburg), Grand Alliance. Although largely concentrated in Europe, fighting spread to colonial poss ...
(1689–1697), the
War of the Spanish Succession The War of the Spanish Succession was a European great power conflict fought between 1701 and 1714. The immediate cause was the death of the childless Charles II of Spain in November 1700, which led to a struggle for control of the Spanish E ...
(1701–1714), the
War of the Austrian Succession The War of the Austrian Succession was a European conflict fought between 1740 and 1748, primarily in Central Europe, the Austrian Netherlands, Italian Peninsula, Italy, the Atlantic Ocean and Mediterranean Sea. Related conflicts include King Ge ...
(1740–1748), the
French Revolutionary Wars The French Revolutionary Wars () were a series of sweeping military conflicts resulting from the French Revolution that lasted from 1792 until 1802. They pitted French First Republic, France against Kingdom of Great Britain, Great Britain, Habsb ...
(1792–1802), and the
Napoleonic Wars {{Infobox military conflict , conflict = Napoleonic Wars , partof = the French Revolutionary and Napoleonic Wars , image = Napoleonic Wars (revision).jpg , caption = Left to right, top to bottom:Battl ...
(1803–1815). British historian John Robert Seeley dubbed all of those wars between France and Great Britain (later the UK) between 1689 and 1815 (including the
American Revolutionary War The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was the armed conflict that comprised the final eight years of the broader American Revolution, in which Am ...
from 1775 to 1783) as the
Second Hundred Years' War The Second Hundred Years' War is a periodization or historical era term used by some historians to describe the series of military conflicts around the globe between Great Britain and France that occurred from about 1689 (or some say 1714) to 1 ...
, echoing an earlier period of conflict between France and England known as the
Hundred Years' War The Hundred Years' War (; 1337–1453) was a conflict between the kingdoms of Kingdom of England, England and Kingdom of France, France and a civil war in France during the Late Middle Ages. It emerged from feudal disputes over the Duchy ...
(1337–1453). Some writers have referred to the American Revolutionary War alone as a world war. Others (like William R. Thompson or Chase-Dunn and Sokolovsky) also include the
Italian Wars The Italian Wars were a series of conflicts fought between 1494 and 1559, mostly in the Italian Peninsula, but later expanding into Flanders, the Rhineland and Mediterranean Sea. The primary belligerents were the House of Valois, Valois kings o ...
and ''Dutch wars'' Dutch-Spanish and Anglo-Dutch Wars">Eighty_Years'_War.html" ;"title="nowiki/>Eighty Years' War">Dutch-Spanish and Anglo-Dutch Wars] as part of Global Wars, while clasificating WW1 and WW2 as the Global ''German Wars'', and the Coalition Wars with French–Habsburg rivalry#Nine Years' War, Wars of Louis XIV as the 2nd and 1st Global ''French Wars''. However, other historians prefer to see all of those conflicts as "Hegemonic Wars" or "General Wars", been inter-regional wars on the grand scale, but not worldly. Other historians suggest even earlier conflicts to be world wars. For example, Russian ethnologist L. N. Gumilyov called the
Byzantine–Sasanian War of 602–628 The Byzantine–Sasanian War of 602–628, also called the Last Great War of Antiquity, was fought between the Byzantine Empire and the Sasanian Empire. It was the final and most devastating conflict of the Roman–Persian wars (54 BCAD&n ...
"the World War of the 7th century" because it evolved into a war between the fourfold alliance of the
Chinese Empire Chinese Empire (), or Empire of China, refers to the realm ruled by the Emperor of China during the era of Imperial China. It was coined by western scholars to describe the Ming dynasty, Ming and Qing dynasty, Qing dynasties (or imperial Dyna ...
, the
Western Turkic Khaganate The Western Turkic Khaganate () or Onoq Khaganate () was a Turkic khaganate in Eurasia, formed as a result of the wars in the beginning of the 7th century (593–603 CE) after the split of the First Turkic Khaganate (founded in the 6th century o ...
, the
Khazars The Khazars ; 突厥可薩 ''Tūjué Kěsà'', () were a nomadic Turkic people who, in the late 6th century CE, established a major commercial empire covering the southeastern section of modern European Russia, southern Ukraine, Crimea, a ...
, and the
Byzantine Empire The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived History of the Roman Empire, the events that caused the ...
against a triple union of the
Sasanian Empire The Sasanian Empire (), officially Eranshahr ( , "Empire of the Iranian peoples, Iranians"), was an List of monarchs of Iran, Iranian empire that was founded and ruled by the House of Sasan from 224 to 651. Enduring for over four centuries, th ...
, the Avars, and the
Eastern Turkic Khaganate The Eastern Turkic Khaganate ( zh, t=東突厥, p=Dōng Tūjué or Dōng Tújué) was a Turkic khaganate formed as a result of the internecine wars in the beginning of the 7th century (AD 581–603) after the First Turkic Khaganate (found ...
, with proxy conflicts in
Afro-Eurasia Afro-Eurasia (also Afroeurasia and Eurafrasia) is a landmass comprising the continents of Africa, Asia, and Europe. The terms are compound (linguistics), compound words of the names of its constituent parts. Afro-Eurasia has also been called th ...
(like the
Aksumite–Persian wars The Aksumite–Persian wars took place in the 6th century, when the Kingdom of Aksum and the Sasanian Empire fought for control over South Arabia. Between 570 and 580 AD, two Persian invasions secured control over South Arabia, giving rise to t ...
) and across the
Old World The "Old World" () is a term for Afro-Eurasia coined by Europeans after 1493, when they became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia in the Eastern Hemisphere, previously ...
. Others consider that the
Ottoman–Portuguese confrontations The Ottoman–Portuguese or the Turco-Portuguese confrontationsSalih Özbaran, ''The Ottoman response to European expansion: studies on Ottoman-Portuguese relations in the Indian Ocean and Ottoman administration in the Arab lands during the sixtee ...
and
Ottoman–Habsburg wars The Ottoman–Habsburg wars were fought from the 16th to the 18th centuries between the Ottoman Empire and the Habsburg monarchy, which was at times supported by the Kingdom of Hungary, Polish–Lithuanian Commonwealth, Holy Roman Empire, The ...
can be considered as world conflicts, prototypes of the "
Great Game The Great Game was a rivalry between the 19th-century British Empire, British and Russian Empire, Russian empires over influence in Central Asia, primarily in Emirate of Afghanistan, Afghanistan, Qajar Iran, Persia, and Tibet. The two colonia ...
" in
Eurasia Eurasia ( , ) is a continental area on Earth, comprising all of Europe and Asia. According to some geographers, Physical geography, physiographically, Eurasia is a single supercontinent. The concept of Europe and Asia as distinct continents d ...
and the
Scramble for Africa The Scramble for Africa was the invasion, conquest, and colonialism, colonisation of most of Africa by seven Western European powers driven by the Second Industrial Revolution during the late 19th century and early 20th century in the era of ...
, but between two main power-projecting and religious blocs, the
Ottomans Ottoman may refer to: * Osman I, historically known in English as "Ottoman I", founder of the Ottoman Empire * Osman II, historically known in English as "Ottoman II" * Ottoman Empire The Ottoman Empire (), also called the Turkish Empir ...
, as holders of the
Muslim Muslims () are people who adhere to Islam, a Monotheism, monotheistic religion belonging to the Abrahamic religions, Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God ...
Caliphate A caliphate ( ) is an institution or public office under the leadership of an Islamic steward with Khalifa, the title of caliph (; , ), a person considered a political–religious successor to the Islamic prophet Muhammad and a leader of ...
, and the
Habsburgs The House of Habsburg (; ), also known as the House of Austria, was one of the most powerful dynasties in the history of Europe and Western civilization. They were best known for their inbreeding and for ruling vast realms throughout Europe d ...
, as
Holy Roman Emperor The Holy Roman Emperor, originally and officially the Emperor of the Romans (disambiguation), Emperor of the Romans (; ) during the Middle Ages, and also known as the Roman-German Emperor since the early modern period (; ), was the ruler and h ...
. However, the
Americas The Americas, sometimes collectively called America, are a landmass comprising the totality of North America and South America.''Webster's New World College Dictionary'', 2010 by Wiley Publishing, Inc., Cleveland, Ohio. When viewed as a sing ...
and
Oceania Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its co ...
were not involved in those conflicts, in which case, other historians consider the
Thirty Years' War The Thirty Years' War, fought primarily in Central Europe between 1618 and 1648, was one of the most destructive conflicts in History of Europe, European history. An estimated 4.5 to 8 million soldiers and civilians died from battle, famine ...
and
Eighty Years' War The Eighty Years' War or Dutch Revolt (; 1566/1568–1648) was an armed conflict in the Habsburg Netherlands between disparate groups of rebels and the Spanish Empire, Spanish government. The Origins of the Eighty Years' War, causes of the w ...
(specially Iberian–Dutch War) as the first global conflict, pitting the
Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many countries in the Americas **Spanish cuisine **Spanish history **Spanish culture ...
and
Portuguese Empire The Portuguese Empire was a colonial empire that existed between 1415 and 1999. In conjunction with the Spanish Empire, it ushered in the European Age of Discovery. It achieved a global scale, controlling vast portions of the Americas, Africa ...
s against the
French French may refer to: * Something of, from, or related to France ** French language, which originated in France ** French people, a nation and ethnic group ** French cuisine, cooking traditions and practices Arts and media * The French (band), ...
,
Dutch Dutch or Nederlands commonly refers to: * Something of, from, or related to the Netherlands ** Dutch people as an ethnic group () ** Dutch nationality law, history and regulations of Dutch citizenship () ** Dutch language () * In specific terms, i ...
, and
British Empire The British Empire comprised the dominions, Crown colony, colonies, protectorates, League of Nations mandate, mandates, and other Dependent territory, territories ruled or administered by the United Kingdom and its predecessor states. It bega ...
s and their allies (mostly
Protestants Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...
, like Danish and Swedish oversea expeditions) across the five continents. Another possible example is the
Second Congo War The Second Congo War, also known as Africa's World War or the Great War of Africa, was a major conflict that began on 2 August 1998, in the Democratic Republic of the Congo, just over a year after the First Congo War. The war initially erupted ...
(1998–2003) even though it was only waged on one continent. It involved nine nations and led to ongoing low-intensity warfare despite official peace and the first democratic elections in 2006. It has been referred to as "Africa's World War".


See also

*
Interwar period In the history of the 20th century, the interwar period, also known as the interbellum (), lasted from 11 November 1918 to 1 September 1939 (20 years, 9 months, 21 days) – from the end of World War I (WWI) to the beginning of World War II ( ...
*
Post-war A post-war or postwar period is the interval immediately following the end of a war. The term usually refers to a varying period of time after World War II, which ended in 1945. A post-war period can become an interwar period or interbellum, ...
* Post-Cold War era *
List of largest empires Several empires in human history have been contenders for the largest of all time, depending on definition and mode of measurement. Possible ways of measuring size include area, population, economy, and power. Of these, area is the most commonly ...
* List of military conflicts spanning multiple wars *
List of countries by number of military and paramilitary personnel This is a list of countries by number of military and paramilitary personnel. It includes any government-sponsored soldiers used to further the domestic and foreign policies of their respective government. The term "country" is used in its most ...
*
List of ongoing armed conflicts The following is a list of ongoing armed conflicts that are taking place around the world. Criteria This list of ongoing armed conflicts identifies present-day conflicts and the death toll associated with each conflict. The criteria of inclu ...
*
Military history Military history is the study of War, armed conflict in the Human history, history of humanity, and its impact on the societies, cultures and economies thereof, as well as the resulting changes to Politics, local and international relationship ...


References


Bibliography

* *


External links


This is the Fourth World War
an interview with philosopher Jean Baudrillard {{World topic, List of wars involving, noredlinks=yes War World Wars by type