When Stalin learned that his son had been captured by the Germans, he said the following: "Fool - he could not even shoot himself!" and in front of his youngest son Vasily announced him that he had surrendered like a coward.
Yakov wrote a letter to Stalin: "" Dear father! He was taken prisoner. I am in good health. In the near future I will be sent to a camp for officers in Germany. I am treated well. Stay healthy. Hi everyone. Yasha "
After the defeat at Stalingrad, the German command wanted to exchange him for Field Marshal Paulus, taken prisoner by the Red Army. Stalin replied to this: "I am not changing a soldier for a field marshal!" (these words are reproduced in the movie "Liberation").
In 1943, Yakov Dzhugashvili, was shot by a guard at the Sachsenhausen camp for refusing to obey orders.