[Sesay:] The trial of a former Nazi S.S. guard is set to resume in the next few hours in Germany.
[Vause:] The 94-year-old is charged as an accessory to the murder of at least 170,000 people at the Auschwitz concentration camp. Here's Nick Glass.
[Nick Glass, Cnn Correspondent:] The railway line into Auschwitz, the last journey for over a million people murdered by the Nazis. The gas chambers were built well out of sight in the whiteness beyond.
[Glass:] 71 years after liberation, we're running out of witnesses. Everybody's old men and women. Auschwitz was the only camp where prisoners were tattooed, were given a number. One by one, they were escorted into court in the northern German city of Detmold. Erna DePriee is 92. She was just 21 in Auschwitz, after two months, forced to move camps, leaving her mother behind. The last thing her mother had said to her was, you will survive and tell what happened to us. The man on trial is 94, a little fragile on his feet and intent on avoiding all eye contact. Reinhold Hanning was 21 when he became an S.S. guard at Auschwitz. He denies complicity in mass murder. For the last five years or so, the German justice system has actively sought to widen responsibility for the Holocaust. John Demanyuk, a guard at another extermination camp. In 2011, aged 90, he was convicted by a German court of being an accessory to murder. Oscar Gorning, who worked for Auschwitz as a bookkeeper at the age of 21. In 2015, aged 94, he was sentenced to four years in prison for accessory to murder. He admitted moral guilt and pleaded for forgiveness. His case is still under appeal. Back then, this was the terrifying end of the line. As one survivor remembered, chimneys spewing fire and an unbearable smell of burning human flesh. Three other cases from Auschwitz are still pending, two men, and one woman, all of them camp guards. The trials are likely to be the last of their kind. Lyian Schwartzbaum is 94. He was the youngest on the left in the old photo. He lost his parents and his uncle at Auschwitz. He and the accused, Reinhold Hanning, are the same age and, as he put it, soon to face our final judge. He simply wants Hanning to tell the truth. Nick Glass, CNN.