Complex sentence: Shortly after the German occupation of France during World War II, Sark too was occupied and the seigneur was deported to the continent and interned into a Nazi concentration camps in Germany, where he spent three years.
Split into simpler sentences: Shortly after the German occupation of France during World War II, Sark too was occupied. The seigneur was deported to the continent and interned into a Nazi concentration camp in Germany, where he spent three years.