Complex sentence: Soviet sources claimed 80,000 enemy dead and 50,000 taken prisoner during the operation; further elements of Fourth Army continued to resist around Pillau, and latterly on the Frische Nehrung, until May.
Split into simpler sentences: Soviet sources claimed 80,000 enemy dead and 50,000 taken prisoner during the operation. Further elements of Fourth Army continued to resist around Pillau, and latterly on the Frische Nehrung, until May.