Complex sentence: Most of the German prisoners were crew members from the Kriegsmarine destroyer "Erich Koellner" sunk at Djupvik on the southern side of the Ofotfjord during the Battles of Narvik, including the destroyer's commander, "Fregattenkapitän" Alfred Schulze-Hinrichs.
Split into simpler sentences: Most of the German prisoners were crew members from the Kriegsmarine destroyer "Erich Koellner" sunk at Djupvik on the southern side of the Ofotfjord during the Battles of Narvik. The prisoners included the destroyer's commander, "Fregattenkapitän" Alfred Schulze-Hinrichs.