History 24 Airplanes, Military 11 Aeronautics, Military 10 Fighter planes 6 Political Science 6 Tanks (Military science) 5 Air warfare 4 more ... Armored vehicles, Military 4 Space warfare 4 Air power 3 Astronautics, Military 3 Ballistic missile defenses 3 History ; Technology 3 Management & Organizational Behavior 3 Military helicopters 3 Military policy 3 Militärflugzeug 3 Technology 3 Atomic bomb 2 Aviation 2 Biography 2 Biological weapons 2 Bombers 2 Campaigns 2 Commando troops 2 F-35 (Jet fighter plane) -- Cost control; United States. Air Force -- Reorganization; United States. Air Force -- Appropriations and expenditures 2 Fighter pilots 2 Jet planes, Military 2 Luftkrieg 2 Luftwaffe 2 less ...