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Defence In Depth
Defence in depth (also known as deep defence or elastic defence) is a military strategy that seeks to delay rather than prevent the advance of an attacker, buying time and causing additional casualties by yielding space. Rather than defeating an attacker with a single, strong defensive line, defence in depth relies on the tendency of an attack to lose momentum over time or as it covers a larger area. A defender can thus yield lightly defended territory in an effort to stress an attacker's logistics or spread out a numerically superior attacking force. Once an attacker has lost momentum or is forced to spread out to pacify a large area, defensive counter-attacks can be mounted on the attacker's weak points, with the goal being to cause attrition or drive the attacker back to its original starting position. Strategy A conventional defence strategy would concentrate all military resources at a front line, which, if breached by an attacker, would leave the remaining defenders in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 sense as the "art of the general", or "'the art of arrangement" of troops. Military strategy deals with the planning and conduct of campaigns, the movement and disposition of forces, and the deception of the enemy. 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 pre-eminence to political aims over military goals. Sun Tzu (544–496 BC) is often considered as the father of Eastern military strategy and greatly influenced Chinese, Japane ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dragon's Teeth (fortification)
Dragon's teeth (german: Drachenzähne) are square-pyramidal fortifications of reinforced concrete first used during the Second World War to impede the movement of tanks and mechanised infantry. The idea was to slow down and channel tanks into killing zones where they could easily be disposed of by anti-tank weapons. They were employed extensively, particularly on the Siegfried Line. World War II Dragon's teeth were used by several armies in the European Theatre. The Germans made extensive use of them on the Siegfried Line and the Atlantic Wall. Typically, each tooth was tall. Land mines were often laid between teeth, and further obstacles were constructed along the lines of teeth, such as barbed wire to impede infantry or diagonally-placed steel beams to further hinder tanks. Many were laid in the United Kingdom in 1940–1941, as part of the effort to strengthen the country's defences against a possible German invasion. Due to the huge numbers laid and their durable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defence-in-depth (Roman Military)
Defence-in-depth is the term used by American political analyst Edward Luttwak (born 1942) to describe his theory of the defensive strategy employed by the Late Roman army in the third and fourth centuries AD. Luttwak's ''Grand Strategy of the Roman Empire'' (1976) launched the thesis that in the third and early fourth centuries, the Imperial Roman army's defence strategy mutated from "forward defence" (or "preclusive defence") during the Principate era (30 BC-AD 284) to "defence-in-depth" in the fourth century. "Forward-" or "preclusive" defence aimed to neutralise external threats before they breached the Roman borders: the barbarian regions neighbouring the borders were envisaged as the theatres of operations. In contrast, "defence-in-depth" would not attempt to prevent incursions into Roman territory, but aimed to neutralise them on Roman soil - in effect turning border provinces into combat zones. Scholarly opinion generally accepts "forward-defence" as a valid descripti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Luttwak
Edward Nicolae Luttwak (born 4 November 1942) is an American author known for his works on grand strategy, military strategy, geoeconomics, military history, and international relations. He is best known for being the author of '' Coup d'État: A Practical Handbook''. His book ''Strategy: The Logic of War and Peace'', also published in Chinese, Russian and nine other languages, is widely used at war colleges around the world. Early life Luttwak was born into a Jewish family in Arad, Romania, and raised in Italy and England. Career After attending a boarding school in Berkshire, where he joined the British Army cadet corps, Luttwak moved to London at the age of 16 and went to a grammar school (which in England is an academically selective school for students aged from 11 to 18). He then studied analytical economics at the London School of Economics. In 1968, when he was 26 and working in London as a consultant for the oil industry, he published the book '' Coup d'État: A Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Legions
The Roman legion ( la, legiō, ) was the largest military unit of the Roman army, composed of 5,200 infantry and 300 equites (cavalry) in the period of the Roman Republic (509 BC–27 BC) and of 5,600 infantry and 200 auxilia in the period of the Roman Empire (27 BC – AD 476). Size The size of a typical legion varied throughout the history of ancient Rome, with complements ranging from 4,200 legionaries and 300 equites (drawn from the wealthier classes – in early Rome all troops provided their own equipment) in the Republican period of Rome (the infantry were split into 10 cohorts each of four maniples of 120 legionaries), to 4,800 legionaries (in 10 cohorts of 6 centuries of 80 legionaries) during Caesar's age, to 5,280 men plus 120 auxiliaries in the Imperial period (split into 10 cohorts, nine of 480 men each, with the first cohort being double-strength at 960 men). It should be noted the above numbers are typical field strengths while "paper strength" was slig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encirclement
Encirclement is a military term for the situation when a force or target is isolated and surrounded by enemy forces. The situation is highly dangerous for the encircled force. At the strategic level, it cannot receive supplies or reinforcements, and on the tactical level, the units in the force can be subject to an attack from several sides. Lastly, since the force cannot retreat, unless it is relieved or can break out, it must fight to the death or surrender. A special kind of encirclement is the siege. In that case, the encircled forces are enveloped in a fortified position in which long-lasting supplies and strong defences are in place, allowing them to withstand attacks. Sieges have taken place in almost all eras of warfare. History Encirclement has been used throughout the centuries by military leaders, including generals such as Spartacus, Alexander the Great, Julius Caesar, Genghis Khan, Khalid bin Waleed, Hannibal, Sun Tzu, Yi Sun Shin, Shaka Zulu, von Wall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hannibal
Hannibal (; xpu, 𐤇𐤍𐤁𐤏𐤋, ''Ḥannibaʿl''; 247 – between 183 and 181 BC) was a Carthaginian general and statesman who commanded the forces of Carthage in their battle against the Roman Republic during the Second Punic War. He is widely regarded as one of the greatest military commanders in history. Hannibal's father, Hamilcar Barca, was a leading Carthaginian general during the First Punic War. His younger brothers were Mago and Hasdrubal; his brother-in-law was Hasdrubal the Fair, who commanded other Carthaginian armies. Hannibal lived during a period of great tension in the Mediterranean Basin, triggered by the emergence of the Roman Republic as a great power with its defeat of Carthage in the First Punic War. Revanchism prevailed in Carthage, symbolized by the pledge that Hannibal made to his father to "never be a friend of Rome". In 218 BC, Hannibal attacked Saguntum (modern Sagunto, Spain), an ally of Rome, in Hispania, sparking the Seco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Cannae
The Battle of Cannae () was a key engagement of the Second Punic War between the Roman Republic and Carthage, fought on 2 August 216 BC near the ancient village of Cannae in Apulia, southeast Italy. The Carthaginians and their allies, led by Hannibal, surrounded and practically annihilated a larger Roman and Italian army under the consuls Lucius Aemilius Paullus and Gaius Terentius Varro. It is regarded as one of the greatest tactical feats in military history and one of the worst defeats in Roman history. Having recovered from their losses at Trebia (218 BC) and Lake Trasimene (217 BC), the Romans decided to engage Hannibal at Cannae, with approximately 86,000 Roman and allied troops. They massed their heavy infantry in a deeper formation than usual, while Hannibal used the double envelopment tactic and surrounded his enemy, trapping the majority of the Roman army, who were then slaughtered. The loss of life on the Roman side meant it was one of the most lethal single day ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morale
Morale, also known as esprit de corps (), is the capacity of a group's members to maintain belief in an institution or goal, particularly in the face of opposition or hardship. Morale is often referenced by authority figures as a generic value judgment of the willpower, obedience, and self-discipline of a group tasked with performing duties assigned by a superior. According to Alexander H. Leighton, "morale is the capacity of a group of people to pull together persistently and consistently in pursuit of a common purpose". Morale is important in the military, because it improves unit cohesion. With good morale, a force will be less likely to give up or surrender. Morale is usually assessed at a collective, rather than an individual level. In wartime, civilian morale is also important. Esprit de corps is considered to be an important part of a fighting unit. Definition Military history experts have not agreed on a precise definition of "morale". Clausewitz's comments on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobility (military)
Mobility in military terms refers to the ability of a weapon system, combat unit or armed force to move toward a military objective. Combat forces with a higher mobility are able to move more quickly, and/or across more hostile terrain, than forces with lower mobility. Mobility is regarded as a vital component of the modern battlefield, as the ability to deliver weapon systems or combat units to their objective quickly can often mean the difference between victory and defeat. Armies around the world have massively increased their mobility over the last 100 years. In World War I, for example, most combat units could move on the battlefield only as fast as a soldier could walk. In the face of overwhelming firepower presented by machine guns and artillery, that resulted in stalemate and an inability to outmaneuver the enemy. By World War II, battlefield mobility had greatly improved with the development of the tank, and with tracked and other mechanized vehicles, to move forces to, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retreat (military)
A tactical withdrawal or retreating defensive action is a type of military operation, generally meaning that retreating forces draw back while maintaining contact with the enemy. A withdrawal may be undertaken as part of a general retreat, to consolidate forces, to occupy ground that is more easily defended, force the enemy to overextend to secure a decisive victory, or to lead the enemy into an ambush. It is considered a relatively risky operation, requiring discipline to keep from turning into a disorganized rout or at the very least doing severe damage to the military's morale. Tactical withdrawal A withdrawal may be anticipated, as when a defending force is outmatched or on disadvantageous ground, but must cause as much damage to an enemy as possible. In such a case, the retreating force may employ a number of tactics and strategies to further impede the enemy's progress. This could include setting mines or booby traps during or before withdrawal, leading the enemy into p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrain
Terrain or relief (also topographical relief) involves the vertical and horizontal dimensions of land surface. The term bathymetry is used to describe underwater relief, while hypsometry studies terrain relative to sea level. The Latin word (the root of ''terrain'') means "earth." In physical geography, terrain is the lay of the land. This is usually expressed in terms of the elevation, slope, and orientation of terrain features. Terrain affects surface water flow and distribution. Over a large area, it can affect weather and climate patterns. Importance The understanding of terrain is critical for many reasons: * The terrain of a region largely determines its suitability for human settlement: flatter alluvial plains tend to have better farming soils than steeper, rockier uplands. * In terms of environmental quality, agriculture, hydrology and other interdisciplinary sciences; understanding the terrain of an area assists the understanding of watershed boundaries, dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
