Why 91,000 German Soldiers Never Came Back from Stalingrad?

Why 91,000 German Soldiers Never Came Back from Stalingrad?

Thousands of German soldiers were captured at Stalingrad. Almost none returned.
On February 2, 1943, the German Sixth Army surrendered to the Red Army. It was one of the greatest defeats in modern military history. The prisoners, exhausted by hunger and cold, were sent deep into the Soviet Union.
The prisoners were neither interrogated nor identified. They were quickly sorted, put on sealed trains, and dispersed across a network of camps in isolated regions. No one recorded who they were or where they went. Over time, their names disappeared from the archives, and their families received only silence.
What happened to the Germans captured after Stalingrad who never returned home?
Credit to : TrenchFall