MOSCOW, April 7 (Pyotr DUNAYEV, a war historian, retired colonel and World War II veteran, for RIA Novosti) - It was the last radiogram Paulus' staff received from Hitler. Chief of staff R. Schmidt handed it to Paulus saying: "Congratulations! You are General Field Marshal." Paulus was emotionless. The condition of his army group in Stalingrad was fatal. The staff located in the basement of a local department store was blocked, communication with German troops was lost and the snow-covered square was heaped up with bodies of dead German soldiers swarming with lice. I met veteran of the Battle of...