Which French marshal was known as the 'Iron Marshal'?

Louis-Nicolas Davout was the French marshal known as the “Iron Marshal.” His stern discipline, careful organization, and battlefield reliability earned him the French nickname “Le Maréchal de fer.”

Davout was one of Napoleon’s original 18 marshals, appointed in 1804. He commanded the III Corps of the Grande Armée and became famous for winning the Battle of Auerstädt on 14 October 1806. With roughly 28,000 troops, he defeated the main Prussian army, which had more than twice as many men.

The nickname reflected both his personal severity and his reputation for making formations dependable under extreme pressure. Davout’s troops were rigorously trained and disciplined; he even prohibited plundering in occupied villages. He also won distinction at Austerlitz, Eylau, Eckmühl, and Wagram.

Davout is sometimes confused with Michel Ney, another celebrated marshal who was nicknamed “the Bravest of the Brave.” Davout’s reputation was less theatrical but arguably more consistent: he never lost a major battle he personally commanded.