Maréchal de camp Marc René, marquis de Montalembert (16 July 1714 – 29 March 1800) was a French Royal Army officer and writer best known for his work on fortifications and writings on military engineering.
Life
He was born on 16 July 1714 at Angoulême, and joined the French Royal Army in 1732. He fought in the War of the Polish Succession on the Rhine, and in the War of the Austrian Succession made the campaigns of 1742 in Bohemia and Italy. In the years preceding the Seven Years' War, Montalembert (who had become an associate member of the Académie des Sciences in 1747) devoted his energies to the art of fortification, to which Vauban's Traité de l'attaque attracted him, and founded the cannon foundry Ruelle Foundry at Ruelle, near his birthplace. He obtained the annulment of the sequestration.