Military organization in the context of Space command

A coup d'état (/ˌkuːdeɪˈtɑː/ ; French: [ku deta] ; lit. 'stroke of state'), or simply a coup, is typically an illegal and overt attempt by a military organization or other government elites to unseat an incumbent person or leadership. A self-coup is said to take place when a leader, having come to power through legal means, tries to stay in power through illegal means.

By one estimate, there were 457 coup attempts from 1950 to 2010, half of which were successful. Most coup attempts occurred in the mid-1960s, but there were also large numbers of coup attempts in the mid-1970s and the early 1990s. Coups occurring in the post-Cold War period have been more likely to result in democratic systems than Cold War coups, though coups still mostly perpetuate authoritarianism.

Irregular military is any military component distinct from a country's regular armed forces, representing non-standard militant elements outside of conventional governmental backing. Irregular elements can consist of militias, private armies, mercenaries, or other non-state actors, though no single definition exists beyond exclusion from national service. Without standard military unit organization, various more general names are often used; such organizations may be called a troop, group, unit, column, band, or force. Irregulars are soldiers or warriors that are members of these organizations, or are members of special military units that employ irregular military tactics. This also applies to irregular infantry and irregular cavalry units.

Irregular warfare is warfare employing the tactics commonly used by irregular military organizations. This often overlaps with asymmetrical warfare, avoiding large-scale combat and focusing on small, stealthy, hit-and-run engagements.

Military sociology is a subfield within sociology. It corresponds closely to C. Wright Mills's summons to connect the individual world to broader social structures. Military sociology aims toward the systematic study of the military as a social group rather than as a military organization. This highly specialized sub-discipline examines issues related to service personnel as a distinct group with coerced collective action based on shared interests linked to survival in vocation and combat, with purposes and values that are more defined and narrow than within civil society. Military sociology also concerns civil-military relations and interactions between other groups or governmental agencies.

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 first used during the 18th century, was seen in its narrow sense as the "art of the general", or "the art of arrangement" of troops. and deals with the planning and conduct of campaigns.

The father of Western modern strategic studies, Carl von Clausewitz (1780–1831), defined military strategy as "the employment of battles to gain the end of war." B. H. Liddell Hart's definition put less emphasis on battles, defining strategy as "the art of distributing and applying military means to fulfill the ends of policy". Hence, both gave the preeminence to political aims over military goals.

Headquarters (often referred to as HQ) notes the location where most or all of the important functions of an organization are coordinated. The term is used in a wide variety of situations, including private sector corporations, non-profits, military organizations, religious groups, sports leagues and so on. It usually implies a geographically dispersed organization with a clear hierarchical structure.

A militia (/mɪˈlɪʃə/ mil-ISH-ə) is a military or paramilitary force that comprises civilian members, as opposed to a professional standing army of regular, full-time military personnel. Militias may be raised in times of need to support regular troops or serve as a pool of available manpower for regular forces to draw from.

When acting independently, militias are generally unable to hold ground against regular forces. Militias commonly support regular troops by skirmishing, holding fortifications, or conducting irregular warfare, instead of undertaking offensive campaigns by themselves. However, militias may also engage in defense activities to protect a community, its territory, property, and laws. For example, naval militias may comprise fishermen and other civilians which are organized and sanctioned by a state to enforce its maritime boundaries.

The theme of Iberia (Greek: θέμα Ἰβηρίας) was an administrative and military unit (theme) within the Byzantine Empire carved by the Byzantine Emperors out of several Georgian lands in the 11th century. It was formed as a result of Emperor Basil II’s annexation of a portion of the Bagrationi dynasty domains (1000–1021) and later aggrandized at the expense of several Armenian kingdoms acquired by the Byzantines in a piecemeal fashion in the course of the 11th century. The population of the theme—at its largest extent—was multiethnic with a possible Georgian majority, including a sizable Armenian community of Chalcedonic rite to which Byzantines sometimes expanded, as a denominational name, the ethnonym "Iberian", a Graeco-Roman designation of Georgians. The theme ceased to exist in 1074 as a result of the Seljuk invasions.

A counterattack is a tactic employed in response to an attack, with the term originating in "war games". The general objective is to negate or thwart the advantage gained by the enemy during attack, while the specific objectives typically seek to regain lost ground or destroy the attacking enemy (this may take the form of an opposing sports team or military units).

A counter-offensive is a broad-scale counterattack. The counter-offensive is executed after exhausting the enemy's frontline troops and after the enemy reserves had been committed to combat and proven incapable of breaching defenses, but before the enemy has had the opportunity to assume new defensive positions. Sometimes the counter-offensive can be of a more limited operational maneuver nature, with more limited objectives rather than those seeking attainment of a strategic goal. A counter-offensive was considered by Clausewitz to be the most efficient means of forcing the attacker to abandon offensive plans. Counter-offensives can be executed not only on land, but also by the naval, and air forces. Strategic counter-offensives have been recorded by military historians in many wars throughout military history. Although not always known as such, because they are usually described by historians in conjunction with the defensive phase, such as the Battle of Moscow.

The commanding officer (CO) or commander, or sometimes, if the incumbent is a general officer, commanding general (CG), is the officer in command of a military unit. The commanding officer has ultimate authority over the unit, and is usually given wide latitude to run the unit as they see fit, within the bounds of military law. In this respect, commanding officers have significant responsibilities (for example, the use of force, finances, equipment, the Geneva Conventions), duties (to higher authority, mission effectiveness, duty of care to personnel), and powers (for example, discipline and punishment of personnel within certain limits of military law).

In some countries, commanding officers may be of any commissioned rank, although in others the term only refers to officers in command of units of specific sizes. Usually, there are more officers than command positions available, and time spent in command is generally a key aspect of promotion, so the role of commanding officer is highly valued. The commanding officer heads the command team within the modern military hierarchy.

A military operation plan (commonly called a war plan before World War II) is a formal plan for military armed forces, their military organizations and units to conduct operations, as drawn up by commanders within the combat operations process in achieving objectives before or during a conflict. Military plans are generally produced in accordance with the military doctrine of the troops involved. Because planning is a valuable exercise for senior military staff, in peacetime nations generally produce plans (of varying detail) even for very unlikely hypothetical scenarios.

Plan XVII and the Schlieffen Plan are examples of World War I military plans. The United States developed a famous color-coded set of war plans in the early 20th century; see United States color-coded war plans.

A chaplain is religious worker, either a cleric or a lay representative of a religious tradition, attached to a secular institution (such as a hospital, prison, military unit, intelligence agency, embassy, school, labor union, business, police department, fire department, university, sports club), or a private chapel. The term chaplaincy refers to the chapel, facility or department in which one or more chaplains carry out their role.

Though the term chaplain originally referred to representatives of the Christian faith, it is now also applied to people of other religions or philosophical traditions, as in the case of chaplains serving with military forces and an increasing number of chaplaincies at U.S. universities. In recent times, many lay people have received professional training in chaplaincy and are now appointed as chaplains in schools, hospitals, companies, universities, prisons and elsewhere to work alongside, or instead of, official members of the clergy. The concepts of a multi-faith team, secular, generic or humanist chaplaincy are also gaining increasing use, particularly within healthcare and educational settings.

A command in military terminology is an organisational unit for which a military commander is responsible. Commands, sometimes called units or formations, form the building blocks of a military. A commander is normally specifically appointed to the role in order to provide a legal framework for the authority bestowed. Naval and military officers have legal authority by virtue of their officer's commission, but the specific responsibilities and privileges of command are derived from the publication of appointment.

The relevant definition of 'command' according to the United States Department of Defense (US DOD) is as follows:

Radio control (often abbreviated to RC) is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors. Radio control is also used for control of model vehicles from a hand-held radio transmitter. Industrial, military, and scientific research organizations make use of radio-controlled vehicles as well. A rapidly growing application is control of unmanned aerial vehicles (UAVs or drones) for both civilian and military uses, although these have more sophisticated control systems than traditional applications.