War Economic aspects 38 Peace 31 Religious aspects 17 History 16 Military art and science 15 World War, 1939-1945 12 Economic policy 9 International relations 8 World politics 8 Disarmament 7 Psychological aspects 7 World War, 1914-1918 7 Christianity 5 Foreign relations 5 Military history 5 Strategy 5 Armed Forces 4 Moral and ethical aspects 4 Revolutions 4 War and society 4 Catholic Church 3 Defenses 3 Economic history 3 Military weapons 3 Politics and government 3 Sociology, Military 3 State, The 3 Appropriations and expenditures 2 Arms transfers 2