To begin with, the field marshal's last name was Paulus not "von Paulus". The aristocratic "von" was added by Allied propagandists. Friedrich Paulus was treated well by his Soviet captors, though if you see the film clip of his initial interrogation for the cameras he looks stressed and strained and evidences a slight facial tick. However once he got over the humiliation of surrendering (and perhaps realized that he was not going to be shot), he offered a toast with the drink he had been given to ‘the victorious Red Army’. Since he was the highest ranking German officer that the Soviets had ever captured, he was not sent into captivity with the remnants of the Sixth Army. Two years later, after the unsuccessful 20th of July 1944 attempt on Hitler’s life, Paulus became a vocal critic of the Nazi regime and joined the Soviet’s "National Committee for a Free Germany” propaganda movement that was composed of anti-Nazi army officers and other noteworthy captured Germans. Paulus was released from Soviet captivity in 1953. He lived out the rest of his life quietly in East Germany where he died in Dresden the 1957. Aside from reaffirming that he believed that he had done the right thing by surrendering, Paulus left no memoirs or written records of the epic military disaster.