BERLIN—German prosecutors have charged a 100-year-old man with 3,518 counts of being an accessory to murder on allegations he served during World War II as a Nazi SS guard at a concentration camp on the outskirts of Berlin, authorities said Tuesday. The man is alleged to have worked at the Sachsenhausen camp between 1942 and 1945 as an enlisted member of the Nazi Party’s paramilitary wing, said Cyrill Klement, who led the investigation of the centenarian for the Neuruppin prosecutors’ office. The man’s name wasn’t released in line with German privacy laws. Despite his advanced age, the suspect is considered fit enough to stand trial, though accommodations may have to be made to limit how many hours per day the court is in session, Klement told The Associated Press. The Neuruppin office was handed the case in 2019 by the special federal prosecutors’ office in Ludwigsburg tasked with investigating Nazi-era …