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Amilitary exercise,training exercise,maneuver (American English), manoeuvre (Commonwealth English), orwar game is the employment ofmilitary resources intraining formilitary operations. Military exercises are conducted to explore the effects ofwarfare or test tactics and strategies without actualcombat. They also ensure thecombat readiness of garrisoned or deployable forces prior to deployment from a home base.
While both war games and military exercises aim to simulate real conditions and scenarios for the purpose of preparing and analyzing those scenarios, the distinction between a war game and a military exercise is determined, primarily, by the involvement of actual military forces within the simulation, or lack thereof. Military exercises focus on the simulation of real, full-scale military operations in controlled hostile conditions in attempts to reproduce war time decisions and activities for training purposes or to analyze the outcome of possible war time decisions. War games, however, can be much smaller than full-scale military operations, do not typically include the use of functional military equipment, and decisions and actions are carried out by artificial players to simulate possible decisions and actions within an artificial scenario which usually represents a model of a real-world scenario. Additionally, mathematical modeling is used in the simulation of war games to provide a quantifiable method of deduction. However, it is rare that a war game is depended upon for quantitative results, and the use of war games is more often found in situations where qualitative factors of the simulated scenario are needed to be determined.[1]
The actual use of war games and the results that they can provide are limited by possibilities. War games cannot be used to achieve predictive results, as the nature of war and the scenarios that war games aim to simulate are not deterministic. Therefore, war games are primarily used to consider multiple possible outcomes of any given decision, or number of decisions, made in the simulated scenario. These possible outcomes are analyzed and compared, and cause-and-effect relationships are typically sought for the unknown factors within the simulation. It is typically the relationships between visual aspects of the simulation that aid in the assessment of the problems that are simulated within war games, like geographic locations and positionings that would be difficult to discern or analyze at full-scale and for complex environments.[2]
Military exercises involving multiplebranches of the same military are known asjoint exercises, while military exercises involving two or more countries are known ascombined,coalition,bilateral, ormultilateral exercises, depending on the nature of the relationship between the countries and the number of them involved. These exercises allow for better coordination between militaries and observation of enemy tactics, and serve as a visible show of strength and cooperation for the participating countries.[3] According to a 2021 study, joint military exercises within well-defined alliances usually deter adversaries without producing a moral hazard because of the narrow scope of the alliance, while joint military exercises outside of an alliance (which are extremely rare) usually lead to conflict escalation.[4]
Exercises in the 20th and 21st centuries have often been identified by a uniquecode name, such asCobra Gold, in the same manner as military contingency operations and combat operations likeOperation Phantom Fury.
Military exercises are sometimes used as cover for the build up to an actual invasion, as in the cases of theWarsaw Pact invasion of Czechoslovakia and the2022 Russian invasion of Ukraine, or it can provoke opponents at peace to perceive it as such, as in the case ofAble Archer 83.
A Command Post Exercise (CPX) typically focuses on the battle readiness of staffs such as a particularUnified Combatant Command or one of its components at any level. It may run in parallel with an FTX or its equivalent, or as a stand-alone event for headquarters staff only with heavy emphasis on simulated events.

Historical names for the field exercise, or the full-scale rehearsal of military maneuvers as practice for warfare in the military services of the British Commonwealth include "schemes", while those of the military services United States are known asField Training Exercises (FTX), or, in the case of naval forces, Fleet Exercises (FLEETEX). In a field exercise or fleet exercise, the two sides in the simulated battle are typically called "red" (simulating theenemy forces) and "blue", to avoid naming a particular adversary.[5] This naming convention originates with the inventors of the table-top war-game (the "Kriegsspiel"), the PrussianGeorg von Reisswitz; their army worePrussian blue, so friendly forces were depicted by the color blue.

Several different armed forces of the same nation training together are described as having a joint exercise. Those involving forces of multiple nations are described as having a combined exercise or coalition exercise. These are called a bilateral exercise if based on security agreements between two nations, or a multilateral exercise if the agreement is between multiple nations.

Other types of exercise include the Tactical Exercise Without Troops (TEWT), also known as asand table, map, cloth model, orcomputer simulation exercise. These allow commanders to manipulatemodels through possible scenarios in military planning. This is also called warfare simulation, or in some instances avirtual battlefield, and in the past has been described as "wargames". Such examples of modern military wargames includeDARWARS, aserious game developed since 2003 byDARPA withBBN Technologies, adefense contractor which was involved in the development ofpacket switching, used forARPANET, and which developed the firstcomputer modem in 1963.
Military operations and training have included different scenarios a soldier might encounter with morals and different ethics. In one military operation soldiers are frequently asked to engage in combat, humanitarian, and stabilization roles. These increase the ambiguity of a role one may encounter and challenge of ethics. This will also lead the military personnel to have to make a difficult call in challenging circumstances.[6] Even in difficult situations and conditions, military personnel still has to follow rules and regulations such as: 1) when the right thing to do is not immediately clear; 2) when two or more important principles or values support different actions, and 3) when some harm will result, regardless of the actions taken (Defense Ethics Program, Department of National Defense, 2012). These simulations involve crude living conditions, sleep deprivations, time limit, and either lack or ambiguous amount of information.
A subset of simulated exercises is the Table Top Exercise (TTX), typically limited to senior personnel stepping through the decision-making processes they would employ in a crisis, a contingency, or general warfare.

The use of military exercises and war games can be found to date back to as early as the early 19th century, wherein it was the officers of thePrussian Army who created the contemporary, tactical form of wargames that have since been more widely used and developed by other military conglomerations throughout the world. Non-tactical forms of wargames have existed for much longer, however, in the forms of tabletop games such aschess andGo.[7]
The modern use of military exercises grew out of the military need to study warfare and toreenact old battles for learning purposes. During the age ofKabinettskriege (Cabinet wars),Frederick the Great,King of Prussia from 1740 to 1786, "put together his armies as a well-oiled clockwork mechanism whose components wererobot-like warriors. No individual initiative was allowed to Frederick's soldiers; their only role was to cooperate in the creation of walls of projectiles through synchronized firepower."[8] This was in the pursuit of a more effective army, and such practices made it easier to look at war from a top-down perspective. Disciplined troops should respond predictably, allowing study to be confined to maneuvers andcommand.
Prussia's victory over theSecond French Empire in theFranco-Prussian War (1870–71) is sometimes partly credited to the training of Prussian officers with thewargameKriegsspiel, which was invented around 1811 and gained popularity with many officers in the Prussian army. These first wargames were played withdice which represented "friction", or the intrusion of less than ideal circumstances during a real war (includingmorale,meteorology, thefog of war, etc.).

21st century militaries still use wargames to simulate future wars andmodel their reaction. According toManuel de Landa, afterWorld War II theCommand, Control and Communications (C3) was transferred from the military staff to theRAND Corporation, the firstthink tank. Around the mid to late 20th century, computer simulated war games were created to replace traditional war gaming methods with the goal of optimizing and speeding up the process and making it possible to analyze more complex scenarios with greater ease. In 1958, the Naval War college installed a computer war game system where their traditional war gaming activities were held. The system was called the Navy Electronic Warfare System, and cost over $10 million to install.[9] The change from traditional war gaming methods to electronic computer simulated ones meant that the value and accuracy of a war game simulation was less dependent on skill and individual experiences, and more dependent on quantitative data and complicated analysis methods.[10]
Von Neumann was employed by the RAND Corporation, and hisgame theory was used in wargames to modelnuclear dissuasion during theCold War. Thus, the U.S.nuclear strategy was defined using wargames, "SAM" representing the U.S. and "IVAN" representing the Soviet Union.
Early game theory included onlyzero-sum games, which means that when one player won, the other automatically lost. Theprisoner's dilemma, which models the situation of two prisoners in which each one is given the choice to betray or not the other, gave three alternatives to the game:
This model gave the basis for themassive retaliation nuclear doctrine. Thezero-sum fallacy andcooperative games would be theorized only later, while the evolution ofnuclear technology andmissiles made the massive retaliation nuclear strategy obsolete.[11]
| name | host | type | invited participant(s) | focus | first held | frequency |
|---|---|---|---|---|---|---|
| Anatolian Eagle | Turkey | Multilateral | Aerial warfare | 2001 | No fixed schedule | |
| AMAN | Pakistan | Multilateral | Maritime security | 2007 | Biannual | |
| Balikatan | Philippines | Bilateral | Combined arms | 1991 | Annual | |
| BALTOPS | NATO | Multilateral | Naval warfare | 1971 | Annual | |
| Blue Flag | Israel | Bilateral | Aerial warfare | 2013 | No fixed schedule | |
| Bright Star | Egypt | Bilateral | Combined arms | 1980 | Biannual | |
| CARAT | United States | Bilateral | ASEAN members | Naval warfare, Combined arms | 1995 | Annual |
| Caucasus exercises | Russia | Multilateral | Combined arms | 2006 | Approx. every 4 years | |
| Centre exercises | Russia | Joint | Combined arms | 2011 | Every 4 years | |
| Cobra Gold | Thailand | Multilateral | Combined arms, military simulation, humanitarian aid and disaster relief | 1982 | Annual | |
| Cold Response | NATO (Norway) | Multilateral | Defence readiness | 2006 | Biannual | |
| Cope West | Indonesia | Bilateral | United States | Aerial Warfare | 1989[12] | Previously no fixed schedule (1989, 2010, 2012). Annual (2016–present) |
| Croix du Sud | France | Multilateral | Humanitarian aid anddisaster relief | 2002 | Biannual | |
| Dynamic Manta | NATO | Multilateral | Naval warfare | 2006 | Annual | |
| Green Dagger | United States | Multilateral | Infantry combat | 2019 | Annual | |
| Keris MAREX | Indonesia | Bilateral | United States | Marine exercise | 2022 | Annual |
| Keris Woomera | Australia Indonesia | Bilateral | Australia and Indonesia | Combined arms, humanitarian assistance, and disaster relief evacuation. | 2024 | Biennial |
| Komodo Exercise | Indonesia | Multilateral | Australia, France, India, Italy, Japan, Malaysia, Pakistan, Philippines, Russia, Singapore, South Korea, Thailand, United Kingdom, United States and Vietnam (2025). | Naval Warfare | 2014 | Annual |
| Malabar | India | Multilateral | Naval warfare, maritime security | 1992 | Annual | |
| Maple Flag | Canada | Multilateral | United Kingdom, United States | Aerial combat | 1978 | Annual |
| Pitch Black | Australia | Multilateral | Brunei, Canada, Fiji, France, Germany, India, Indonesia, Italy, Japan, Malaysia, New Zealand, Papua New Guinea, Philippines, Singapore, South Korea, Spain, Thailand, United Kingdom and United States (2024). | Aerial warfare | 1981 | Biennial |
| Real Thaw | Portugal | Multilateral | Aerial combat | 2009 | Annual | |
| Red Flag | United States | Multilateral | Aerial combat | 1975 | Triennial / biannual | |
| Red Flag – Alaska | United States | Multilateral | Aerial warfare | 2006 | Triennial / quad-annual | |
| Resolute Dragon | Japan | Bilateral | United States | Defence readiness, command and control.[13] | 2021 | Annual |
| RIMPAC | United States | Multilateral | Australia, Beligian, Brazil, Brunei, Canada, Chile, Colombia, Denmark, Ecuador, France, Germany, India, Indonesia, Israel, Italia, Japan, Malaysia, Mexico, Netherlands, New Zealand, Peru, Philippines, Singapore, South Korea, Sri Lanka, Thailand, Tonga and United Kingdom (2024). | Naval warfare, maritime security. | 1971 | Biannual |
| Saif Sareea | Oman | Bilateral | United Kingdom | Combined arms | 1986 | No fixed schedule |
| Super Garuda Shield | Indonesia | Multilateral | Australia,Brazil,Canada,France,Germany,Japan,Netherlands,New Zealand,Singapore,South Korea,United Kingdom,United States (2025). | Combined arms, command post, humanitarian aid and disaster relief | 2007 | Annual |
| Talisman Saber | Australia | Bilateral | United Kingdom, United States | Combined arms; combat readiness | 2005 | Biannual |
| Varuna | India | Bilateral | Naval warfare | 1993 | Annual | |
| Vostok Exercises | Russia | Joint | Combat readiness; command and control | 2010 | Every 4 years | |
| Zapad | Russia,Soviet Union | Joint | Varying focuses | 1981 | Approx. every 4 years | |
| name | host | type | invited participant(s) | focus | first held | frequency |
| name | host | type | invited participant(s) | focus | held | frequency | significance |
|---|---|---|---|---|---|---|---|
| Fleet problem | United States | joint | naval warfare | 1923–1941, 2014–2021 | no fixed schedule | bulk of U.S. Navy exercises in theinterwar period untilWorld War II | |
| Carolina Maneuvers | United States | joint | warfare strategy | 1941 | standalone | involved approximately 350,000 soldiers | |
| Louisiana Maneuvers | United States | joint | warfare strategy | 1941 | standalone | involved approximately 400,000 soldiers, including several officers who would become prominent military leaders duringWorld War II | |
| Reforger | NATO (West Germany) | multilateral | West Germany,United Kingdom, United States | combat readiness | 1969–1988, 1990–1993 | annual | display of preparedness in the event of war betweenNATO and theWarsaw Pact |
| North China Military Exercise | China | joint | unknown | 1981 | standalone | involved over 114,000 soldiers; the largest Chinese military exercise up to that point | |
| Able Archer | NATO | multilateral, command post | combat readiness,nuclear warfare | unknown | annual | Able Archer 83 was mistakenly perceived by theSoviet Union to be genuine NATO war preparations | |
| Brasstacks | India | joint | combined arms | 1986–1987 | standalone | involved approximately 500,000 soldiers; the largest military exercise on theIndian subcontinent in history | |
| Millennium Challenge | United States | simulation | warfare strategy | 2002 | standalone | restarted after Blueforce (representing the U.S.) was quickly defeated by Redforce (representingIran orIraq), with a new rule limiting Redforce's capabilities and favouring Blueforce, caused controversy when Blueforce won | |
| Caucasus 2009 | Russia | joint | combat readiness | 2009 | standalone | conducted as ashow of force againstGeorgia after theRusso-Georgian War | |
| Union Resolve 2022 | Russia | bilateral | combined arms, warfare strategy | 2022 | standalone | a deception by Russia for mobilisation prior to theRussian invasion of Ukraine | |
| 2022 Chinese military exercises around Taiwan | China,Taiwan | joint (not involving Taiwan) | naval warfare; combined arms | 2022 | standalone | conducted as a show of force against the U.S. to deter American influence in Taiwan, shortly after U.S.Speaker of the HouseNancy Pelosi'svisit to Taiwan | |
| name | host | type | invited participant(s) | focus | held | frequency | significance |