The Battle of Fleurus, on 26 June 1794, was a major engagement between the army of the First French Republic, under General Jean-Baptiste Jourdan, and the Coalition Army (Great Britain, Hanover, Dutch Republic, and Habsburg Monarchy), commanded by Prince Josias of Coburg, in the most decisive battle of the Flanders Campaign in the Low Countries during the French Revolutionary Wars. Both sides had forces in the area numbering in the vicinity of 80,000 men, but the French were able to more effectively concentrate their troops in order to achieve victory against 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 afterwards remained ascendant throughout the rest of the War of the First Coalition.