Defense, Self-defense, Right of self-defense, Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs, United States Department of Defense, Missile Defense Agency, Assistant Secretary of Defense for Nuclear, Chemical & Biological Defense Programs, United Defense, Under Secretary of Defense for Policy, Missile defense, Ministry of Defense (Japan), Affirmative defense, United States Assistant Secretary of Defense, Defense (legal), Defense Logistics Agency, Earth Defense Force, Ministry of Defense (Israel), Gay panic defense, Aerospace Defense Command, United States Deputy Under Secretary of Defense, Cœur Défense, Defense Distributed, United States Deputy Secretary of Defense, La Défense station, Civil defense in the United States, United States Secretary of Defense, Defense (sports), United States national missile defense, Office of Civil Defense, La Défense, Defense Language Institute, Defense pact, Defense Update, Air Defense Artillery Branch, Defense Information Systems Agency, Self-defense force, Defense Clandestine Service, Ministry of Defense (Saudi Arabia), Territorial Defense, Civil defense, Abuse defense

Tower defense, Office of the Secretary of Defense, Chewbacca defense, State defense force, Defense Acquisition University, Under Secretary of Defense for Intelligence and Security, Private defense agency, Marine defense battalions, Box-and-one defense, Defense Acquisition Program Administration, Civil defense by country, Impossibility defense, Ministry of Defense (Afghanistan), Defense Intelligence Agency, 4–3 defense, Criminal defense lawyer, Air Defense Command (Israel), Assistant Secretary of Defense for Acquisition, 3–4 defense, National Council for the Defense of Democracy – Forces for the Defense of Democracy, 4703d Defense Wing, National Defense Industrial Association, National Defense Area, Missile defense systems by country, Assistant to the Secretary of Defense for Public Affairs, Twinkie defense, Department of Defense Office of Inspector General, Gunderam Defense, Queen's Knight Defense, Eastern Air Defense Sector, Japan Self-Defense Forces, Defense Policy Board Advisory Committee, Secretary of National Defense (Philippines), Defense Media Activity, Self Defense Fleet, Secretary of Defense Medal for the Defense of Freedom, List of ministers of defense (Indonesia), Line defense, Southwest Air Defense Sector, Insanity defense, Territorial Defense (Yugoslavia), Modern Defense, National Defense College of the Philippines, Western Air Defense Sector, Matrix defense, Economics of defense, Boston Air Defense Sector, Department of Defense Dependents Schools, Assistant Secretary of Defense for Space Policy, Esplanade de La Défense station

Defense, Self-defense, Right of self-defense, Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs, United States Department of Defense, Missile Defense Agency, Assistant Secretary of Defense for Nuclear, Chemical & Biological Defense Programs, United Defense, Under Secretary of Defense for Policy, Missile defense, Ministry of Defense (Japan), Affirmative defense, United States Assistant Secretary of Defense, Defense (legal), Defense Logistics Agency, Earth Defense Force, Ministry of Defense (Israel), Gay panic defense, Aerospace Defense Command, United States Deputy Under Secretary of Defense, Cœur Défense, Defense Distributed, United States Deputy Secretary of Defense, La Défense station, Civil defense in the United States, United States Secretary of Defense, Defense (sports), United States national missile defense, Office of Civil Defense, La Défense, Defense Language Institute, Defense pact, Defense Update, Air Defense Artillery Branch, Defense Information Systems Agency, Self-defense force, Defense Clandestine Service, Ministry of Defense (Saudi Arabia), Territorial Defense, Civil defense, Abuse defense, Tower defense, Office of the Secretary of Defense, Chewbacca defense, State defense force, Defense Acquisition University, Under Secretary of Defense for Intelligence and Security, Private defense agency, Marine defense battalions, Box-and-one defense, Defense Acquisition Program Administration, Civil defense by country, Impossibility defense, Ministry of Defense (Afghanistan), Defense Intelligence Agency, 4–3 defense, Criminal defense lawyer, Air Defense Command (Israel), Assistant Secretary of Defense for Acquisition, 3–4 defense, National Council for the Defense of Democracy – Forces for the Defense of Democracy, 4703d Defense Wing, National Defense Industrial Association, National Defense Area, Missile defense systems by country, Assistant to the Secretary of Defense for Public Affairs, Twinkie defense, Department of Defense Office of Inspector General, Gunderam Defense, Queen's Knight Defense, Eastern Air Defense Sector, Japan Self-Defense Forces, Defense Policy Board Advisory Committee, Secretary of National Defense (Philippines), Defense Media Activity, Self Defense Fleet, Secretary of Defense Medal for the Defense of Freedom, List of ministers of defense (Indonesia), Line defense, Southwest Air Defense Sector, Insanity defense, Territorial Defense (Yugoslavia), Modern Defense, National Defense College of the Philippines, Western Air Defense Sector, Matrix defense, Economics of defense, Boston Air Defense Sector, Department of Defense Dependents Schools, Assistant Secretary of Defense for Space Policy, Esplanade de La Défense station, Defense Counterintelligence and Security Agency, Chigorin Defense, Defense Systems, 5–2 defense, List of United States defense contractors, Spokane Air Defense Sector, Shaggy defense, Defense industry of Israel, Under Secretary of Defense for Research and Engineering, Criminal defenses, Ministry of National Defense (Taiwan), Pac-Man defense, Raytheon Missiles & Defense, Verbal self-defense, Scandinavian Defense, Ministry of Defense (Ethiopia), Ministry of Defense (Kazakhstan), Continental Air Defense Command, Agency for Defense Development, 10th Aerospace Defense Group, Ministry of Defense (Venezuela), Defense Criminal Investigative Service, Defense Grid: The Awakening, Under Secretary of Defense for Acquisition and Sustainment, Comités de défense paysanne, Civil Defense Patrols, Council of National Defense, Defense Attaché System, Ground-Based Midcourse Defense, Defense Threat Reduction Agency, Defense Acquisition Board, Harbor Defense Command, Deacons for Defense and Justice, Center for Defense Information, Minister of Defense (Austria), 4702d Defense Wing, National Defense Management Center, Aegis Ballistic Missile Defense System, Michigan Defense Force, Minister of Defense (Japan), Ministry of Defense (Turkmenistan), Justifiable Defense, Defense Companies (Syria), Defense Security Cooperation Agency, Civil Air Defense Bureau (China), List of Department of Defense appointments by Joe Biden, 4733d Air Defense Group, Empire Defense Council, Department of Defense Cyber Crime Center, Ministry of National Defense (China), Imperfect self-defense, National Defense Academy of Japan, GM Defense, Self Defense, 4620th Air Defense Wing, National Organization for Passive Defense, Workers Defense Union, Ministry of National Defense (Madagascar), National Defense Authorization Act, Ministry of National Defense (South Korea)