In Auschwitz, he claims he was given the job of sorting out money and valuables stolen from Jews before they were gassed, and denies a role in the actual murders of inmates. "I would describe my role as a small cog in the gears. If you can describe this as guilt then I am guilty. Legally speaking I am innocent," he has said.
But Groning also admits being a passive witness to appalling crimes against humanity. He watched one of his SS colleagues murder a small baby: "The crying bothered him, so he smashed the baby's head against the side of a truck until it was dead," he told Der Spiegel in 2005.
Prosecutors will rely on a new legal precedent set by former Ukrainian-born death camp guard John Demjanjuk, who was convicted of complicity in mass murder by a Munich court in 2012.
Demjanjuk was a guard at the Nazi extermination camp of Sobibor, where inmates were immediately sent to their death. Judges ruled that merely by working at the camp, he was an accessory to mass murder.
That Auschwitz was a labour camp, and not solely a death camp, will make Groning's case more complicated, lawyers say. Groning insists that he is innocent.
- The Independent