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Anti-access And Area Denial
Anti-Access/Area Denial (or A2/AD) is a military strategy to control access to and within an operating environment. In an early definition, anti-access refers to those actions and capabilities, usually long-range, designed to prevent an opposing force from entering an operational area. Area denial refers to those actions and capabilities, usually of shorter range, designed to limit an opposing force's freedom of action within the operational area. In short, A2 affects movement to a theater, while AD affects movement within a theater. A2/AD typically refers to a strategy used by a weaker opponent to defend against an opponent of superior skill, although a stronger opponent can also use A2/AD. Overview A2/AD strategy is a significant concern of US policy, viewing it as a weapon of weaker forces that could be used against the US military. The US military considers that enemy adoption of anti-access/area denial strategies "may well be the most difficult operational challenge U.S. f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S-400 Triumf-34
S4, S 4, Š-4, S.4 or S-4 may refer to: People * S4 (Dota player), Gustav Magnusson, Swedish ''Dota 2'' player * S4 (military), a logistics officer within military units Places * County Route S4 (California), a road in San Diego, California Science and mathematics Mathematics * S4 algebra, a variety of modal algebras, also called Interior algebra * Symmetric group S4 (S4), an abstract mathematical group * S4, a normal modal logic Chemistry * S4: Keep away from living quarters, a safety phrase in chemistry * Tetrasulfur (S4), an allotrope of sulfur Biology * Fourth heart sound, or S4, an abnormal heart sound often indicative of congestive heart failure or cor pulmonale * Fourth sacrum of the vertebral column in human anatomy * Sacral spinal nerve 4, a spinal nerve of the sacral segment Technology * S (programming language) version 4 * Hibernation a sleeping state in a computer * SG2 Shareable (Fire Control) Software Suite (S4) * Nikon Coolpix S4, a camera * Samsung Gal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AirSea Battle
AirSea Battle is an integrated battle doctrine that forms a key component of the military strategy of the United States. The doctrine became official in February 2010, and was renamed to Joint Concept for Access and Maneuver in the Global Commons (JAM-GC) in 2015. Background Inspired by the AirLand Battle concept, the United States Navy and Air Force are working on a new AirSea Battle doctrine. A version was codified in a 2009 Navy-Air Force classified memo which addressed "asymmetrical threats" in the Western Pacific and the Persian Gulf, which are seen as meaning China and Iran. The Pentagon has created a China Integration Team composed of U.S. Navy officers to apply AirSea Battle lessons to a potential conflict with China, particular in and around the first island chain. In 2010 the Obama Administration declared that freedom of maritime navigation in the South China Sea, whose islands are claimed variously by China, Vietnam, Brunei, Taiwan, Malaysia, and the Philippines, is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S-300 Missile System
The S-300 (NATO reporting name SA-10 Grumble) is a series of long range surface-to-air missile systems developed and operated by the former Soviet Union, now fielded by the militaries of Russia and Ukraine as well as several other former Eastern Bloc countries. It was produced by NPO Almaz, based on the initial S-300P version. The S-300 system was developed to defend against air raids and cruise missiles for the Soviet Air Defence Forces. Subsequent variations were also developed to be able to anti-ballistic missile, intercept ballistic missiles. The S-300 system was first deployed by the Soviet Union in 1979, designed for the air defence of large industrial and administrative facilities, military bases and control of airspace against enemy strike aircraft. During the 2022 Russian invasion of Ukraine, Russian invasion of Ukraine in 2022, military analysts have stated that Russia has modified a number of systems to perform surface-to-surface missile, surface-to-surface strikes. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
No-fly Zone
A no-fly zone, also known as a no-flight zone (NFZ), or air exclusion zone (AEZ), is a territory or area established by a military power over which certain aircraft are not permitted to fly. Such zones are usually set up in an enemy power's territory during a conflict, similar in concept to an aerial demilitarized zone, and usually intend to prohibit the enemy's military aircraft from operating in the region. Military action is employed by the enforcing state and, depending on the terms of the NFZ, may include preemptive attacks to prevent potential violations, reactive force targeted at violating aircraft, or surveillance with no use of force. Air exclusion zones and anti-aircraft defences are sometimes set up in a civilian context, for example to protect sensitive locations, or events such as the 2012 London Olympic Games, against terrorist air attack. No-fly zones are a modern phenomenon established in the 1990s. They can be distinguished from traditional air power mission ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical, Biological, Radiological, And Nuclear
Chemical, biological, radiological and nuclear defence (CBRN defence) are protective measures taken in situations in which chemical, biological, radiological or nuclear warfare (including terrorism) hazards may be present. CBRN defence consists of CBRN passive protection, contamination avoidance, and weapons of mass destruction mitigation. A CBRN incident differs from a hazardous material incident in both scope (i.e., CBRN can be a mass casualty situation) and intent. CBRN incidents are responded to under the assumption that they are intentional and malicious; evidence preservation and perpetrator apprehension are of greater concern than with HAZMAT incidents. A 2011 forecast concluded that worldwide government spending on CBRN defence products and services would reach US$8.38bn that year. Etymology In English the term ''CBRN'' is a replacement for the 1960s–1980s term ''NBC'' (nuclear, biological, and chemical), which had replaced the term ''ABC'' (atomic, biological, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Denial Weapon
An area denial weapon is a defensive device used to prevent an adversary from occupying or traversing an area of land, sea or air. The specific method used does not have to be totally effective in preventing passage (and sometimes is not) as long as it is sufficient to severely restrict, slow down, or endanger the opponent. Some area denial weapons pose long-lasting risks to anyone entering the area, specifically to civilians, and thus are often controversial. An area denial weapon can be part of an anti-access/area denial (A2/AD) strategy. Historical methods Anti-cavalry In medieval warfare, sharp and sturdy stakes were buried at the bottom of long lines of ditches, pointed end up diagonally, in order to prevent cavalry charges in a given area. Even if the stakes were spotted, soldiers would be forced to dismount and effectively give up their advantage as cavalry as well as becoming easier targets. The correct layout of these extensive lines of ditches and the quality control o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interceptor Aircraft
An interceptor aircraft, or simply interceptor, is a type of fighter aircraft designed specifically for the defensive interception role against an attacking enemy aircraft, particularly bombers and reconnaissance aircraft. Aircraft that are capable of being or are employed as both ‘standard’ air superiority fighters and as interceptors are sometimes known as fighter-interceptors. There are two general classes of interceptor: light fighters, designed for high performance over short range; and heavy fighters, which are intended to operate over longer ranges, in contested airspace and adverse meteorological conditions. While the second type was exemplified historically by specialized night fighter and all-weather interceptor designs, the integration of mid-air refueling, satellite navigation, on-board radar and beyond visual range (BVR) missile systems since the 1960s has allowed most frontline fighter designs to fill the roles once reserved for specialised night/all-weathe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Warfare
Electronic warfare (EW) is any action involving the use of the electromagnetic spectrum (EM spectrum) or directed energy to control the spectrum, attack an enemy, or impede enemy assaults. The purpose of electronic warfare is to deny the opponent the advantage of—and ensure friendly unimpeded access to—the EM spectrum. EW can be applied from air, sea, land, and/or space by crewed and uncrewed systems, and can target communication, radar, or other military and civilian assets. The electromagnetic environment Military operations are executed in an information environment increasingly complicated by the electromagnetic spectrum. The electromagnetic spectrum portion of the information environment is referred to as the electromagnetic environment (EME). The recognized need for military forces to have unimpeded access to and use of the electromagnetic environment creates vulnerabilities and opportunities for electronic warfare in support of military operations. Within the informat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruise Missiles
A cruise missile is a guided missile used against terrestrial or naval targets that remains in the atmosphere and flies the major portion of its flight path at approximately constant speed. Cruise missiles are designed to deliver a large warhead over long distances with high precision. Modern cruise missiles are capable of travelling at high subsonic, supersonic, or hypersonic speeds, are self-navigating, and are able to fly on a non-ballistic, extremely low-altitude trajectory. History The idea of an "aerial torpedo" was shown in the British 1909 film ''The Airship Destroyer'' in which flying torpedoes controlled wirelessly are used to bring down airships bombing London. In 1916, the American aviator Lawrence Sperry built and patented an "aerial torpedo", the Hewitt-Sperry Automatic Airplane, a small biplane carrying a TNT charge, a Sperry autopilot and a barometric altitude control. Inspired by the experiments, the United States Army developed a similar flying bomb called th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballistic Missiles
A ballistic missile is a type of missile that uses projectile motion to deliver warheads on a target. These weapons are guided only during relatively brief periods—most of the flight is unpowered. Short-range ballistic missiles stay within the Earth's atmosphere, while intercontinental ballistic missiles (ICBMs) are launched on a sub-orbital flight. These weapons are in a distinct category from cruise missiles, which are aerodynamically guided in powered flight. Unlike cruise missiles, which are restricted to the atmosphere, it is advantageous for ballistic missiles to avoid the denser parts of the atmosphere and they may travel above the atmosphere into outer space. History The earliest form of ballistic missile dates from the 13th century with its use derived from the history of rockets. In the 14th century, the Ming Chinese navy used an early form of a ballistic missile weapon called the Huolongchushui in naval battles against enemy ships.Needham, Volume 5, Part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-air Missile
A surface-to-air missile (SAM), also known as a ground-to-air missile (GTAM) or surface-to-air guided weapon (SAGW), is a missile designed to be launched from the ground to destroy aircraft or other missiles. It is one type of anti-aircraft system; in modern armed forces, missiles have replaced most other forms of dedicated anti-aircraft weapons, with anti-aircraft guns pushed into specialized roles. The first attempt at SAM development took place during World War II, but no operational systems were introduced. Further development in the 1940s and 1950s led to operational systems being introduced by most major forces during the second half of the 1950s. Smaller systems, suitable for close-range work, evolved through the 1960s and 1970s, to modern systems that are man-portable. Shipborne systems followed the evolution of land-based models, starting with long-range weapons and steadily evolving toward smaller designs to provide a layered defence. This evolution of design increasin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarines
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, blockade running, nuclear deterrence, reconnaissance, conventional land attack (for example, using a cruise missile), and covert insertion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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