History 6 Biography 5 Armed Forces 3 Military policy 3 World War, 1939-1945 3 Foreign relations 2 Generals 2 Inland navigation 2 Intelligence officers 2 Law and legislation 2 Management 2 Politics and government 2 Presidents 2 Regimental histories 2 Rule of the road at sea 2 Administration 1 Aerial operations 1 Aeronautics, Commercial 1 Campaigns 1 Central Intelligence Agency 1 Department of Defense 1 Dept. of Defense 1 Environmental policy 1 Foreign economic relations 1 Iraq War, 2003 1 Juvenile literature 1 Korean War, 1950-1953 1 Life skills guide 1 Military art and science 1 Miscellanea 1