[5] He volunteered as an officer in the Austro-Turkish War to fight in Hungary against the Turks who were commanded by the Grand Vizier Köprülüzade Fazıl Ahmed Pasha.

During the war, King Louis XIV sent 6,000 Frenchmen to support Emperor Leopold, placed under the command of the Count Jean de Coligny-Saligny, a rebel who had returned from exile with the Prince of Condé.

As a reward for his services and his courage, he was charged with bringing the news of the capture of the Gallas forts in the Vosges to King Louis XIV at Fontainebleau.

In this capacity, he played an important role in the marriage of Marie Louise d'Orléans with King Charles II of Spain who, by one of the clauses of the 1676 Treaty of Nijmegen, was to marry a French princess.

[7] He retained the favor of the King of France for a long time, even after the scandal known as "the 8 cap": in 1681, the Parlement of Paris held a solemn audience for the reception of the Count of Châlons.

The first president, Nicolas Potier de Novion, contrary to established practice, remained covered while calling the roll of the peers and only uncovered himself when he came to the Princes of the Blood.

When it came time to vote, the peers were in the habit of uncovering themselves, but seeing what had just happened, the Duke of Uzès lost patience, pushed down his hat and nodded with a threatening air.