There were at least a million former Red Army soldiers who fought for the Wehrmacht after they had been captured by the Germans. So this might be a former Red Army soldier being interrogated by his "new" captors trying to convince them he was fighting in the "enemy's" uniform under duress.
I'm pretty sure the Soviets didn't buy the story in the end. There was an interesting section in the book Normandy when an observer from the SU was talking to the American Commander in one area and he asked how many prisoners the Americans were taking.
He was told that many of those captured had no will to fight, possibly because a great number of them were Koreans, Poles and Russians. He was quite upset with the report. Apparently not because of the non-prowess in battle, but because the POWs contained so many former Red Army personnel.
Precisely. He was a "Vlasov"; a Russia soldier who decided to fight against his people (under General Vlasov) in order to escape his fate in the POW camp (as was usually the case). The individuals that the young lad was speaking to were commisars. Care to take a guess as to his fate?