Complex sentence: At the end of the war, he led a "Kampfgruppe" of the 11th Panzer Division, and after being captured by the Americans was a prisoner of war until 1948.
Split into simpler sentences: At the end of the war, he led a "Kampfgruppe" of the 11th Panzer Division. After being captured by the Americans, he was a prisoner of war until 1948.