Foreign relations 15 Military policy 10 Case studies 6 History 6 Economic policy 5 National security 5 Anatomy 4 Armed Forces 4 Economic conditions 4 Foreign economic relations 4 Politics and government 4 War 4 Congresses 3 Democracy 3 Industrial management 3 Military art and science 3 Addresses, essays, lectures 2 Atlases 2 Biography 2 Campaigns 2 Cost of operation 2 Defenses 2 Economic aspects 2 Government policy 2 Human anatomy 2 Human physiology 2 International relations 2 Mathematical models 2 Military government 2 Motor vehicles 2