Armed Forces 383 Mathematical models 375 Military policy 245 Foreign relations 211 Politics and government 208 Research 159 Evaluation 155 more ... Medical care 134 Decision making 131 Costs 127 Economic aspects 124 Data processing 117 Procurement 117 Management 106 Economic conditions 105 Defenses 102 Terrorism 99 Personnel management 94 National security 93 History 92 Education 86 Recruiting, enlistment, etc 85 Weapons systems 85 Government policy 83 Prevention 75 Health insurance 74 Finance 69 International relations 64 Maintenance and repair 61 Policy sciences 61 less ...