A battle is an occurrence of

combat Combat (French for ''fight'') is a purposeful violent conflict meant to physically harm or kill the opposition. Combat may be armed (using weapons) or unarmed ( not using weapons). Combat is sometimes resorted to as a method of self-defense, o ...

warfare War is an intense armed conflict between State (polity), states, governments, Society, societies, or paramilitary groups such as Mercenary, mercenaries, Insurgency, insurgents, and militias. It is generally characterized by extreme violenc ...

between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and force commitment. An engagement with only limited commitment between the forces and without decisive results is sometimes called a skirmish. The word "battle" can also be used infrequently to refer to an entire operational campaign, although this usage greatly diverges from its conventional or customary meaning. Generally, the word "battle" is used for such campaigns if referring to a protracted combat encounter in which either one or both of the combatants had the same methods, resources, and strategic objectives throughout the encounter. Some prominent examples of this would be the

Battle of the Atlantic The Battle of the Atlantic, the longest continuous military campaign in World War II, ran from 1939 to the defeat of Nazi Germany in 1945, covering a major part of the naval history of World War II. At its core was the Allied naval blocka ...

Battle of Britain The Battle of Britain, also known as the Air Battle for England (german: die Luftschlacht um England), was a military campaign of the Second World War, in which the Royal Air Force (RAF) and the Fleet Air Arm (FAA) of the Royal Navy defended ...

, and

Battle of Stalingrad The Battle of Stalingrad (23 August 19422 February 1943) was a major battle on the Eastern Front of World War II where Nazi Germany and its allies unsuccessfully fought the Soviet Union for control of the city of Stalingrad (later re ...

, all in World War II. Wars and

military campaign A military campaign is large-scale long-duration significant military strategy plan incorporating a series of interrelated military operations or battles forming a distinct part of a larger conflict often called a war. The term derives from the ...

s are guided by

military strategy Military strategy is a set of ideas implemented by military organizations to pursue desired strategic goals. Derived from the Greek word ''strategos'', the term strategy, when it appeared in use during the 18th century, was seen in its narrow se ...

, whereas battles take place on a level of planning and execution known as

operational mobility In the field of military theory, the operational level of war (also called operational art, as derived from russian: оперативное искусство, or operational warfare) represents the level of command that connects the details o ...

. German strategist

Carl von Clausewitz Carl Philipp Gottfried (or Gottlieb) von Clausewitz (; 1 June 1780 – 16 November 1831) was a Prussian general and military theorist who stressed the "moral", in modern terms meaning psychological, and political aspects of waging war. His mo ...

stated that "the employment of battles ... to achieve the object of war" was the essence of

strategy Strategy (from Greek στρατηγία ''stratēgia'', "art of troop leader; office of general, command, generalship") is a general plan to achieve one or more long-term or overall goals under conditions of uncertainty. In the sense of the " a ...

Etymology

Battle is a

loanword A loanword (also loan word or loan-word) is a word at least partly assimilated from one language (the donor language) into another language. This is in contrast to cognates, which are words in two or more languages that are similar because t ...

from the

Old French Old French (, , ; Modern French: ) was the language spoken in most of the northern half of France from approximately the 8th to the 14th centuries. Rather than a unified language, Old French was a linkage of Romance dialects, mutually intelligi ...

, first attested in 1297, from

Late Latin Late Latin ( la, Latinitas serior) is the scholarly name for the form of Literary Latin of late antiquity.Roberts (1996), p. 537. English dictionary definitions of Late Latin date this period from the , and continuing into the 7th century in the ...

, meaning "exercise of soldiers and gladiators in fighting and fencing", from

(taken from Germanic) "beat", from which the English word battery is also derived via

Middle English Middle English (abbreviated to ME) is a form of the English language that was spoken after the Norman conquest of 1066, until the late 15th century. The English language underwent distinct variations and developments following the Old English ...

Characteristics

The defining characteristic of the fight as a concept in Military science has changed with the variations in the organisation, employment and technology of military forces. The English military historian

John Keegan Sir John Desmond Patrick Keegan (15 May 1934 – 2 August 2012) was an English military historian, lecturer, author and journalist. He wrote many published works on the nature of combat between prehistory and the 21st century, covering land, ...

suggested an ideal definition of battle as "something which happens between two armies leading to the moral then physical disintegration of one or the other of them" but the origins and outcomes of battles can rarely be summarized so neatly. Battle in the 20th and 21st centuries is defined as the combat between large components of the forces in a

, used to achieve

military objective A strategic military goal is used in strategic military operation plans to define the desired end-state of a war or a campaign. Usually it entails either a strategic change in an enemy's military posture, intentions or ongoing operations, or a ...

s.pp. 65–71, Dupuy Where the duration of the battle is longer than a week, it is often for reasons of

planning Planning is the process of thinking regarding the activities required to achieve a desired goal. Planning is based on foresight, the fundamental capacity for mental time travel. The evolution of forethought, the capacity to think ahead, is c ...

called an operation. Battles can be planned, encountered or forced by one side when the other is unable to withdraw from combat. A battle always has as its purpose the reaching of a

mission goal Mission (from Latin ''missio'' "the act of sending out") may refer to: Organised activities Religion *Christian mission, an organized effort to spread Christianity * Mission (LDS Church), an administrative area of The Church of Jesus Christ of ...

by use of military force.p.67, Dupuy A victory in the battle is achieved when one of the opposing sides forces the other to abandon its mission and surrender its forces,

rout A rout is a panicked, disorderly and undisciplined retreat of troops from a battlefield, following a collapse in a given unit's command authority, unit cohesion and combat morale (''esprit de corps''). History Historically, lightly-e ...

s the other (i.e., forces it to retreat or renders it militarily ineffective for further

combat operation Combat (French for ''fight'') is a purposeful violent conflict meant to physically harm or kill the opposition. Combat may be armed (using weapons) or unarmed ( not using weapons). Combat is sometimes resorted to as a method of self-defense, ...

s) or annihilates the latter, resulting in their deaths or capture. A battle may end in a Pyrrhic victory, which ultimately favors the defeated party. If no resolution is reached in a battle, it can result in a

stalemate Stalemate is a situation in the game of chess where the player whose turn it is to move is not in check and has no legal move. Stalemate results in a draw. During the endgame, stalemate is a resource that can enable the player with the inferi ...

. A conflict in which one side is unwilling to reach a decision by a direct battle using

conventional warfare Conventional warfare is a form of warfare conducted by using conventional weapons and battlefield tactics between two or more states in open confrontation. The forces on each side are well-defined and fight by using weapons that target primari ...

often becomes an

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 irregu ...

. Until the 19th century the majority of battles were of short duration, many lasting a part of a day. (The

Battle of Preston (1648) The Battle of Preston (17–19 August 1648), fought largely at Walton-le-Dale near Preston in Lancashire, resulted in a victory for the New Model Army under the command of Oliver Cromwell over the Royalists and Scots commanded by the Duk ...

, the Battle of Nations (1813) and the

Battle of Gettysburg The Battle of Gettysburg () was fought July 1–3, 1863, in and around the town of Gettysburg, Pennsylvania, by Union and Confederate forces during the American Civil War. In the battle, Union Major General George Meade's Army of th ...

(1863) were exceptional in lasting three days.) This was mainly due to the difficulty of supplying armies in the field or conducting night operations. The means of prolonging a battle was typically with siege warfare. Improvements in

transport Transport (in British English), or transportation (in American English), is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land ( rail and road), water, cable, pipel ...

and the sudden evolving of

trench warfare Trench warfare is a type of land warfare using occupied lines largely comprising Trench#Military engineering, military trenches, in which troops are well-protected from the enemy's small arms fire and are substantially sheltered from artille ...

, with its siege-like nature during the

First World War 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 fig ...

in the 20th century, lengthened the duration of battles to days and weeks. This created the requirement for unit rotation to prevent combat fatigue, with troops preferably not remaining in a combat area of operations for more than a month. Marching to Raate-road

The use of the term "battle" in military history has led to its misuse when referring to almost any scale of combat, notably by strategic forces involving hundreds of thousands of troops that may be engaged in either one battle at a time (

Battle of Leipzig The Battle of Leipzig (french: Bataille de Leipsick; german: Völkerschlacht bei Leipzig, ); sv, Slaget vid Leipzig), also known as the Battle of the Nations (french: Bataille des Nations; russian: Битва народов, translit=Bitva ...

) or operations (

Battle of Kursk The Battle of Kursk was a major World War II Eastern Front engagement between the forces of Nazi Germany and the Soviet Union near Kursk in the southwestern USSR during late summer 1943; it ultimately became the largest tank battle in history. ...

). The space a battle occupies depends on the range of the

weapon A weapon, arm or armament is any implement or device that can be used to deter, threaten, inflict physical damage, harm, or kill. Weapons are used to increase the efficacy and efficiency of activities