Complex sentence: Sir Charles Galton Darwin, KBE, MC, FRS (18 December 1887--13 December 1962) was the English physicist grandson of Charles Darwin, who served as director of the National Physical Laboratory (NPL) during the Second World War.
Split into simpler sentences: Sir Charles Galton Darwin, KBE, MC, FRS (18 December 1887--13 December 1962) was an English physicist, the grandson of Charles Darwin. He served as director of the National Physical Laboratory (NPL) during the Second World War.