A 105-year-old former Nazi-era prison camp guard is being investigated over alleged complicity in the mass murder of Allied prisoners of war. German prosecutors have opened an investigation into the former Wehrmacht soldier over his alleged role at the notorious Stalag 326 VI K Senne camp in western Germany. Now, more than 81 years later, German prosecutors are still pursuing those suspected of involvement in Nazi crimes. The extraordinary investigation began after Germany's Central Office for the Investigation of National Socialist Crimes in Ludwigsburg referred the case to prosecutors in Dortmund in February. A second former Stalag 326 guard had...