"Many Wehrmacht soldiers became witnesses to the Holocaust because they happened to be present or were invited to take part in a mass shooting. In one cell conversation, army General Edwin Graf von Rothkirch und Trach talks about his time in the General Government town of Kutno: "I knew an SS leader pretty well, and we talked about this and that, and one day he said: 'Listen, if you ever want to film one of these shootings? …I mean, it doesn't really matter. These people are always shot in the morning.