Complex sentence: Nine of her crew died, but 33 survived to be taken prisoner, including Jenisch, who spent the next six and a half years in British captivity before returning to Germany in June 1947.
Split into simpler sentences: Nine of her crew died, but 33 survived to be taken prisoner, including Jenisch. He spent the next 6.5 years in British captivity before his return to Germany in June 1947.