Complex sentence: Karl Josef Silberbauer (June 21 1911--1972) was a Nazi SD officer holding the rank of SS- "Oberscharführer", when, serving in the occupied Netherlands, he arrested Anne Frank and her family in their hiding place in 1944.
Split into simpler sentences: Karl Josef Silberbauer (June 21 1911--1972) was the Nazi SD officer holding the rank of SS- "Oberscharführer". Serving in the occupied Netherlands he arrested Anne Frank and her family in their hiding place in 1944.