World War, 1939-1945 History 34 Man-woman relationships 18 Jews 15 Underground movements 14 Holocaust, Jewish (1939-1945) 13 Campaigns 12 more ... Prisoners of war 8 Women 8 Prisoners and prisons, German 7 Rescue 7 Soldiers 7 Atrocities 6 Concentration camps 5 Fighter pilots 5 Nazi concentration camps 5 Prisoners and prisons, Japanese 5 Aerial operations 4 Families 4 Prisoners and prisons 4 Righteous Gentiles in the Holocaust 4 Betrayal 3 Boys 3 Children 3 Friendship 3 Naval operations 3 Occupied territories 3 Orphans 3 Science 3 Search and rescue operations 3 less ...