one question about the movie "mission of honor"

The entire 6th army died at stalingrad

Or was surrendered. I dated a girl whose father was one of the survivors. The Russians kept him a prisoner for two years after the war ended. He went home to Germany, married his sweetheart, and they came to the U.S. in the '50s. I had no idea, until I picked her up one night to go out. She told me she had to call her parents, and when I offered to leave her alone to talk, she said I could stay right there. She then conversed with them in German, and told me the story that night.