Archduke Charles Louis John Joseph Lawrence of Austria, Duke of Teschen (German: Erzherzog Karl Ludwig Johann Josef Lorenz von Österreich, Herzog von Teschen; 5 September 1771 – 30 April 1847) was an Austrian field marshal, the third son of Emperor Leopold II and Maria Luisa of Spain. He was also the younger brother of Francis II, Holy Roman Emperor. He was epileptic, but achieved respect both as a commander and as a reformer of the Austrian Army. He was considered one of Napoleon's most formidable opponents and one of the greatest generals of the French Revolutionary and Napoleonic Wars. Charles wrote several military works as well.
He began his career fighting the revolutionary armies of France. Early in the wars of the First Coalition, he saw victory at Neerwinden in 1793, before being defeated at Wattignies in 1793 and Fleurus in 1794. In 1796, as chief of all Austrian forces on the Rhine, Charles defeated Jean-Baptiste Jourdan at Amberg, Würzburg and Limburg, and then won victories at Wetzlar, Emmendingen and Schliengen that forced Jean Victor Marie Moreau to withdraw across the Rhine. He also defeated opponents at Ostrach, Stockach, Zürich and Mannheim in 1799.