Weapons systems 96 Weapon systems 38 Armed Forces 34 Periodicals 27 History 17 Military supplies 14 Military art and science 13 Firearms 12 Military weapons 9 Weapons system 9 Pistols 8 Equipment and supplies 7 Submarine warfare 7 Military policy 6 Guns 5 Nuclear weapons 5 Radar 5 Arms race 4 Defenses 4 Munitions 4 Ordnance 4 Ordnance, Naval 4 Procurement 4 United States 4 World War, 1939-1945 4 20th century 3 Arms and armor 3 Electronics in military engineering 3 Germany 3 Handbooks, manuals, etc 3