I was fascinated to read the review account by O G Hunter's grandfather, as my father was also a small part of this jolly jape, albeit while 'back at the ranch' at SOE base in Calcutta. In his account the purpose of the raid was to eliminate the source of radio transmissions coming from the German boat, which was sending details of Allied shipping movements to the enemy. According to Dad when the party arrived back at base they returned with one (not two?) German. The raiding party were then in need of a good kip, so they handed my Dad a pistol and the captor and told him to look after the prisoner while they took a few ZZzzzzzs. At some point the captor's girlfriend visited him, although goodness knows where she appeared from or how she knew he was there. After all, no Facebook in those days!