Grandfather

Joe Harper ('Pop Pop') is a beloved grandfather, decorated war hero, and family patriarch. He is loved and respected by everyone that knows him especially his family but a stroke has brought his past under a cloud of suspicion because Joe came out of a coma no longer able to speak but has been heard murmuring German, a language he does not know.
The Grandfather weaves the story of Joe's Harper from his heroic war efforts in WWII as a member of the 508th Infantry Regiment of the 82nd Airborne Division to his time spent in a POW camp in 1945 intertwined with the modern story of his trails being accused of something someone of his stellar track record and life should never be accused of: being a Nazi.
Is society's Zeal to correct for the past so onerous it will ruin the reputation of a decorated war hero or will it be revealed to be justified?