The Duke of Elchingen is a title created in 1808 by Napoleon Bonaparte for his Marshal, Michel Ney. This title was granted in recognition of Ney's significant contributions during the Battle of Elchingen in 1805, where he played a crucial role in the French victory against Austrian forces. The title is part of the French nobility system and reflects the military achievements of its holder. Although the title is no longer active, it remains a historical reference to Ney's legacy and his importance in the Napoleonic Wars, which shaped European history in the early 19th century.