Complex sentence: Marc René, marquis de Montalembert (July 16,1714-March 29,1800), French military engineer and writer, was born at Angoulême, and entered the French Army in 1732.
Split into simpler sentences: Marc René, marquis de Montalembert (July 16,1714-March 29,1800) was a French military engineer and writer. He was born at Angoulême, and entered the French Army in 1732.