World War, 1939-1945 History 57 Holocaust, Jewish (1939-1945) 39 Jews 37 Campaigns 31 Prisoners of war 28 Underground movements 25 more ... Prisoners and prisons, German 23 Military campaigns 17 Refugees 17 Soldiers 17 Jewish resistance 16 Childhood and youth 14 Persecutions 14 Ethnic relations 13 Aerial operations, American 12 American 11 Armed Forces 11 Military operations, Aerial 11 Japanese Americans 10 Children 9 Forced removal and internment, 1942-1945 9 War 9 Politics and government 8 Concentration camps 7 Prisoners and prisons, Japanese 7 Foreign relations 6 Holocaust survivors 6 Jewish refugees 6 Social conditions 6 less ...