NEURUPPIN, Germany (Reuters) – A German court sentenced a former SS guard, now 101 years old, to five years in prison on Tuesday for assisting in the murder of some 3,500 people at the Sachsenhausen concentration camp, bringing to an end one of the last Nazi trials in Germany. Prosecutors had said that Josef S., a member of the Nazi party’s paramilitary SS, helped to send 3,518 people to their deaths at the Sachsenhausen camp, north of Berlin, by regularly standing guard in the watchtower between 1942 and 1945. The trial took nearly nine months as doctors had said the man, whose full name was …