History 80 World War, 1939-1945 73 Biography 36 Campaigns 29 Politics and government 28 Germany 18 Heads of state 15 National socialism 13 Juvenile literature 9 World war, 1939-1945 9 Airplanes, Military 8 Secret service 8 Armed Forces 7 World War, 1914-1918 7 Foreign relations 6 Nazis 6 World War 6 Equipment and supplies 5 Generals 5 Social conditions 5 Aerial operations 4 Aerial operations, Germany 4 Antisemitism 4 Hitler, Adolf, 1889-1945 4 Jews 4 Military intelligence 4 Naval operations 4 Regimental histories 4 World War 1939-1945 4 Army 3