Jewish Religious Customs

I was surprised by something when seeing Exodus this afternoon in the scene where the Arab friend and the young girl Karen are buried. Paul Newman's character says a eulogy for them both at their common grave. Yet he does not have the assembled mourners, all fellow kibbutznik friends of Karen's say Kaddish. It would have been a moving scene, especially since most of the survivors may not have said Kaddish for their families, certainly lost in the concentration camps.