Battle of Fontenoy

On 11 May 1745 at Fontenoy in Flanders, Marshal de Saxe won a famous victory over the Anglo-Hanoverian-Austrian army of the Duke of Cumberland. Louis XV and the dauphin watched from a redoubt. Despite allied numerical superiority (about 50,000 to 45,000), the French broke the enemy center after a memorable exchange between the Comte d'Auteroche and Lord Charles Hay, then repelled counterattacks on the flanks.

In the War of the Austrian Succession, France besieged Tournai, key town of the Austrian Netherlands. Cumberland marched to relieve the siege with a coalition army. Maurice de Saxe, commander-in-chief of the king's forces, chose the Fontenoy heights and fortified villages (Antoing, Fontenoy, Barry) to establish an echeloned defensive position before launching a counteroffensive.

Saxe deployed powerful artillery on the heights and fortified central villages. Allies attacked frontally through the 'gap' between Fontenoy and Antoing; French and Irish guards (Dillon's brigade) repelled English and Hanoverian guards after the legendary courtesy exchange. French cavalry exploited the center breakthrough; allied attacks on flanks (Wood, Barry) were contained by Count von Löwendal and the Marquis de Gouvernet.

Victory enabled the fall of Tournai, Ghent, Brussels, and Ostend within weeks and consolidated French control of Flanders. Fontenoy became a symbol of military prestige under Louis XV and of Saxe's school of war theory. For the Allies, defeat ended the 1745 Flanders offensive and reinforced the prestige of French elite infantry.