Archduke Charles Louis John Joseph Laurentius of Austria, Duke of Teschen was an Austrian field-marshal, the third son of Emperor Leopold II and his wife, 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 more formidable opponents and one of the greatest generals of the French Revolutionary and Napoleonic Wars.

The Battle of Fleurus, on 26 June 1794, was an engagement during the War of the First Coalition, between the army of the First French Republic, under General Jean-Baptiste Jourdan, and the Coalition army, commanded by Prince Josias of Coburg, in the most significant battle of the Flanders Campaign in the Low Countries during the French Revolutionary Wars. Both sides had forces in the area of around 80,000 men but the French were able to concentrate their troops and defeat the First Coalition. The Allied defeat led to the permanent loss of the Austrian Netherlands and to the destruction of the Dutch Republic. The battle marked a turning point for the French army, which remained ascendant for the rest of the War of the First Coalition.