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

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

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