Tactics and strategy of defending against attack

• Defense (military)
  Defense (military)
  Defense has several uses in the sphere of military application.Personal defense implies measures taken by individual soldiers in protecting themselves whether by use of protective materials such as armor, or field construction of trenches or a bunker, or by using weapons that prevent the enemy...
  
  
• Defense (sports)
  • Defender (association football)
    Defender (association football)
    Within the sport of association football, a defender is an outfield player whose primary role is to prevent the opposition from attacking....
    
    
  • Defenceman (ice hockey)
    Defenceman (ice hockey)
    Defence in ice hockey is a player position whose primary responsibility is to prevent the opposing team from scoring...
    
    
• Biological defense (disambiguation)
• a Chess opening
  Chess opening
  A chess opening is the group of initial moves of a chess game. Recognized sequences of opening moves are referred to as openings as initiated by White or defenses, as created in reply by Black. There are many dozens of different openings, and hundreds of named variants. The Oxford Companion to...
  
   as created in reply by Black
• Self-defense
  Self-defense
  Self-defense, self-defence or private defense is a countermeasure that involves defending oneself, one's property or the well-being of another from physical harm. The use of the right of self-defense as a legal justification for the use of force in times of danger is available in many...
  
  
• Civil defense
  Civil defense
  Civil defense, civil defence or civil protection is an effort to protect the citizens of a state from military attack. It uses the principles of emergency operations: prevention, mitigation, preparation, response, or emergency evacuation, and recovery...
  
  

Politics and economics

• National security
  National security
  National security is the requirement to maintain the survival of the state through the use of economic, diplomacy, power projection and political power. The concept developed mostly in the United States of America after World War II...
  
  
  • Defense minister
• International security
  International security
  International security consists of the measures taken by nations and international organizations, such as the United Nations, to ensure mutual survival and safety. These measures include military action and diplomatic agreements such as treaties and conventions. International and national security...
  
  
• The defense industry
  Defense industry
  The defense industry, also called the military industry, comprises government and commercial industry involved in research, development, production, and service of military materiel, equipment and facilities...
  
  
  • Defense contractor
    Defense contractor
    A defense contractor is a business organization or individual that provides products or services to a military department of a government. Products typically include military aircraft, ships, vehicles, weaponry, and electronic systems...
    
    

See also

• A euphemism for war
  War
  War is a state of organized, armed, and often prolonged conflict carried on between states, nations, or other parties typified by extreme aggression, social disruption, and usually high mortality. War should be understood as an actual, intentional and widespread armed conflict between political...
  
   or the military
  Military
  A military is an organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats. The military may have additional functions of use to its greater society, such as advancing a political agenda e.g...
  
  
• HMS Defence
  HMS Defence
  Several ships of the Royal Navy have been named HMS Defence:* Defence, launched in 1763, fought in many battles in the American Revolutionary War, the French Revolutionary Wars and the Napoleonic Wars....
  
  , Royal Navy ships of this name
• Defense of a doctoral thesis, also called viva voce; see dissertation
• La Défense
  La Défense
  La Défense is a major business district of the Paris aire urbaine. With a population of 20,000, it is centered in an orbital motorway straddling the Hauts-de-Seine département municipalities of Nanterre, Courbevoie and Puteaux...
  
  , a business district in Paris
  • The Grande Arche
    Grande Arche
    La Grande Arche de la Défense is a monument and building in the business district of La Défense and in the commune of Puteaux, to the west of Paris, France...
    
    , commonly known as Arche de la Défense, in Paris
• DeFence
  DeFence
  deFENCE is an interactive conceptual art project for freedom of cohabitation, designed in such a way as to include each beholder personally. In tradition of Marcel Duchamp, the two main roles of this exhibit are the work itself, and the person watching it. Only here, the subjective role of the...
  
  , an artproject
• Haganah
  Haganah
  Haganah was a Jewish paramilitary organization in what was then the British Mandate of Palestine from 1920 to 1948, which later became the core of the Israel Defense Forces.- Origins :...
  
   (in Hebrew: "The Defence"), a paramilitary organization in British Palestine
• Tower defense
  Tower defense
  Tower defense is a subgenre of real-time strategy computer games.The goal of tower defense games is to try to stop enemies from crossing a map by building towers which shoot at them as they pass. Enemies and towers usually have varied abilities, costs, and ability costs...
  
  , a type of strategy game
• The pharmaceutical Cimetidine
  Cimetidine
  Cimetidine INN is a histamine H2-receptor antagonist that inhibits the production of acid in the stomach. It is largely used in the treatment of heartburn and peptic ulcers. It is marketed by GlaxoSmithKline under the trade name Tagamet...
  
  , used for treating gastric ulcers
• Defender (disambiguation)
  Defender (disambiguation)
  Defender usually refers to a position in association football .Defender or The Defender may also refer to:-Film and television:* The Defender or The Bodyguard from Beijing, a film starring Jet Li...