Although Polish he was educated/lived in both Germany and Switzerland and Dad recalls vividly how unpleasant it was to listen to, let alone put up with, his extolling of the virtues of the way things were done 'so much better in Germany'. Quite odd for a Pole who was being trained to fly and fight against that very nation?! - John Eacott
VMT for the update - extraordinary behaviour indeed in the circumstances, and I don't believe that he would have passed any realistic vetting procedure.
Jack