Politics and government 29 History 24 National socialism 14 Generals 7 Heads of state 7 Statesmen 5 Biography 4 more ... Nazis 4 World War, 1939-1945 4 Childhood and youth 3 Communists 3 Intellectual life 3 Jews 3 Military policy 3 National Socialism 3 World War, 1914-1918 3 Historians 2 Physicists 2 Politicians 2 Social conditions 2 Aeronautical engineers 1 Aircraft industry 1 Americans 1 Antisemitism 1 Authors 1 Authors, German 1 Communism 1 Conservatism 1 Exiles 1 Exiles' writings, German 1 less ...