History 28 World War, 1939-1945 19 English language 16 Leadership 16 Campaigns 9 Study and teaching 9 Biography 8 Dictionaries 6 Politics and government 6 United States 6 National security 5 Tanks (Military science) 5 Terrorism 5 Case studies 4 Executive ability 4 Juvenile literature 4 Management 4 Success in business 4 Tank warfare 4 Aerial operations, British 3 Espionage, Japanese 3 Fiction 3 Foreign relations 3 Globalization 3 Government policy 3 Handbooks, manuals, etc 3 Internet 3 Pearl Harbor (Hawaii), Attack on, 1941 3 Personal narratives, American 3 Psychology 3