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Defence in depth is a military strategy sometimes also called elastic defence. Defence in depth seeks to delay rather than prevent the advance of an attacker, buying time and causing additional casualties by yielding space. The idea of defence in depth is now widely used to describe non-military strategies. Image File history File links Please see the file description page for further information. ...
Deep defence or defence on the deep was a military tactic used especially by the Wehrmacht under the Battle of Normandy. ...
Military stratagem in the Battle of Waterloo. ...
A strategy is a long term plan of action designed to achieve a particular goal. ...
Military defence in depth
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 danger of being outflanked and surrounded and would leave supply lines vulnerable. A front line is a line of confrontation in an armed conflict, most often a war. ...
“Flanking†redirects here. ...
Supply lines are roads, rail, and other transportation infrastructure needed to replenish the consumables that a military unit requires to function in the field. ...
Defence in depth requires that a defender deploy his resources, such as fortifications, field works and military units at and well behind the front line. Although an attacker may find it easier to breach the more weakly defended front line, as he advances he continues to meet resistance. As he penetrates deeper, the attacker's flanks become vulnerable and should the advance stall, the attacker risks being enveloped. Table of Fortification, from the 1728 Cyclopaedia. ...
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The armed forces of a state are its government sponsored defense and fighting forces and organizations used to further the objectives of the state. ...
The defence in depth strategy is particularly effective against an attacker who is able to concentrate his forces and attack a small number of places on an extended defensive line.
Defenders who can fall back to a succession of prepared positions can extract a high price from the advancing enemy while themselves avoiding the danger of being overrun or outflanked. Delaying the enemy advance mitigates the attacker's advantage of surprise and allows time to move defending units to make a defence and to prepare a counter-attack. This article needs to be cleaned up to conform to a higher standard of quality. ...
A well-planned defence in depth strategy will deploy forces in mutually supportive positions and in appropriate roles. For example, poorly trained troops may be deployed in static defences at the front line whereas better trained and equipped troops form a mobile reserve. Successive layers of defence may use different technologies or tactics; for example a row of dragon's teeth may be a problem for tanks but no barrier to infantry while another barrier of wire entanglements has the opposite effects. Defence in depth may allow a defender to maximise the defensive possibilities of natural terrain and other advantages. During World War II, the term Dragons teeth came to designate square-pyramidal fortifications used to impede the progress of mechanized armies. ...
A wire entanglement was one of the most elaborate types of military wire obstacles. ...
The disadvantages of defence in depth are that it may be unacceptable for a defender to plan to give ground to an attacker. This may be because vital military or economic resources are close to the front line or because yielding to an enemy is unacceptable for political or cultural reasons.
Early examples of defence in depth might be European hill forts and the development of concentric castles. In these examples, the inner layers of defence can support the outer layers with missile fire and an attacker must breach each line of defence in turn with the prospect of significant losses, whereas the defenders have the option of falling back to fight again. A hill fort is a fortified refuge or defended settlement, located to exploit a rise in elevation for military advantage. ...
Krak des Chevaliers: a concentric castle A concentric castle (or multiple castle) is a castle within a castle, with two or more concentric rings of curtain walls and no central keep. ...
More recent examples of defence in depth include the lines of trenches of the First World War, plans for the defence of Britain under threat of German invasion and the Soviet plans for the Battle of Kursk in World War II. Ypres, 1917, in the vicinity of the Battle of Passchendaele. ...
Detail from a pillbox embrasure. ...
Combatants Germany Soviet Union Commanders Erich von Manstein Günther von Kluge Hermann Hoth Walther Model Georgiy Zhukov Konstantin Rokossovskiy Nikolay Vatutin Ivan Konyev Strength 2,700 tanks 800,000 infantry 2,000 aircraft 3,600 tanks 1,300,000 infantry and supporting troops 2,400 aircraft Casualties German Kursk...
Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki TÅjÅ Casualties Military dead: 17,000,000 Civilian dead: 33,000...
Non-military defence in depth The term defence in depth is now used in many non-military contexts. For example, a defence in depth strategy to fire prevention does not focus all the resources only on the prevention of a fire; instead, it also requires the deployment of fire alarms, extinguishers, evacuation plans, mobile rescue and fire-fighting equipment and even nation-wide plans for deploying massive resources to a major blaze.
Defence in depth may mean engineering which emphasizes redundancy - a system that keeps working when a component fails - over attempts to design components that will not fail in the first place. For example, an aircraft with four engines will be less likely to suffer total engine failure than a single-engined aircraft no matter how much effort goes into making the single engine reliable. In engineering, the duplication of critical components of a system with the intention of increasing reliability of the system, usually in the case of a backup or fail-safe, is called redundancy. ...
Look up aircraft in Wiktionary, the free dictionary. ...
Defence in depth (nuclear engineering) In nuclear engineering and nuclear safety, defense in depth denotes the practice of having multiple, independent layers of multiple, redundant, and independent safety systems for the single, critical (in more ways than one) point of failure: the reactor core. This helps to reduce the risk that a single failure of a critical system could cause a core meltdown or other catastrophic failure of reactor containment. Nuclear engineering is the practical application of the atomic nucleus gleaned from principles of nuclear physics and the interaction and maintenance of nuclear fission systems and components, specifically, nuclear reactors, nuclear power plants and/or nuclear weapons. ...
This diagram demonstrates the defense in depth quality of nuclear power plants. ...
Defence in depth (computing) -
Likewise, in information security defence in depth represents the use of multiple computer security techniques to help mitigate the risk of one component of the defence being compromised or circumvented. An example could be anti-virus software installed on individual workstations when there is already virus protection on the firewalls and servers within the same environment. Different security products from multiple vendors may be on different vectors within the network, helping prevent a shortfall in any one defence leading to a wider failure. Defense in Depth is an Information Assurance (IA) strategy where multiple layers of defense are placed through out an Information Technology (IT) system and addresses personnel, technology and operations for the duration of the systems lifecycle. ...
Security is everyone’s responsibility. ...
This article describes how security can be achieved through design and engineering. ...
Anti-virus software consists of computer programs that attempt to identify, thwart and eliminate computer viruses and other malicious software (malware). ...
A computer workstation, often colloquially referred to as workstation, is a high-end general-purpose microcomputer designed to be used by one person at a time and which offers higher performance than normally found in a personal computer, especially with respect to graphics, processing power and the ability to carry...
Firewall separating zones of trust A firewall is a hardware or software device which is configured to permit, deny or proxy data through a computer network which has different levels of trust. ...
This article does not cite any references or sources. ...
A vector in computing, specifically when talking about malicious code such as viruses or worms, is the method that this code uses to propagate itself or infect the computer and this sense is similar to, and derived from, its meaning in biology. ...
“Computer Networks†redirects here. ...
See also In chess, the Hedgehog Defence is a variant of the Queens Indian Defense. ...
A scorched earth policy is a military tactic which involves destroying anything that might be useful to the enemy while advancing through or withdrawing from an area. ...
The culminating point in military strategy is the point at which a military force no longer is able to perform its operations. ...
External links - The elastic defence, 1917-1943.
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