World War, 1939-1945 69 History 62 Campaigns 22 Biography 17 Foreign relations 17 Civilization 10 Japan 7 Politics and government 7 World war, 1939-1945 7 Juvenile literature 6 Atomic bomb 5 Atrocities 5 Military intelligence 5 Naval operations, Japanese 5 Social conditions 5 Economic conditions 4 Emperors 4 Naval operations 4 World War 4 Admirals 3 Aerial operations 3 Aerial operations, Japanese 3 Causes 3 History, Military 3 National characteristics, Japanese 3 Personal narratives, American 3 Personal narratives, Japanese 3 Relations 3 World War,1939-1945 3 Allied occupation 2