François Sebastien Charles Joseph de Croix, Count of Clerfayt

François Sébastien Charles Joseph de Croix, Count of Clerfayt (14 October 1733–21 July 1798) was a military commander in the army of the Holy Roman Empire. A Walloon, he joined the army of the Habsburg monarchy and soon fought in the Seven Years' War. Later in his military career, he led Austrian troops in the Austro-Turkish War. During the French Revolutionary Wars he saw extensive fighting and rose to the rank of Field Marshal.

Early career In the Seven Years' War (1756–1763) he distinguished himself, earning rapid promotion, and received the Military Order of Maria Theresa decoration. At the conclusion of the peace (Treaty of Hubertusburg, 15 February 1763), though still under thirty, he had already become an Oberst (colonel).

During the revolt in the Netherlands in 1787, Clerfayt, as a Walloon by birth, came under great pressure to abandon Emperor Joseph II. But he resisted all overtures, and in the following year went to fight in the Austro-Turkish War with the rank of Feldmarschal-Leutnant (lieutenant field marshal). In an independent command Clerfayt achieved great success, defeating the Turks at Mehadia and Calafat. On 10 November 1788, the emperor appointed him to the rank of Feldzeugmeister.

French Revolutionary Wars In 1792, as one of the most distinguished of the emperor's generals, he received the command of the Austrian contingent in army of the duke of Brunswick, and at La Croix-aux-Bois his corps inflicted a reverse on the troops of the French Revolution. In the Netherlands, he commanded the center at the Battle of Jemappes on 6 November. He opened the campaign of 1793 with the victory of Aldenhoven and the relief of Maastricht, and on 18 March 1793 proved instrumental in causing the complete defeat of Charles Dumouriez at the Battle of Neerwinden. In October, however, his victorious career suffered a reverse at the Battle of Wattignies.

He participated in the Flanders Campaign against Charles Pichegru in 1794. Leading a flanking column from the north, he fought at the Battle of Tourcoing on 17–18 May. A French force under Dominique Vandamme slowed his progress until Joseph Souham defeated the Anglo-Austrian army on the southern part of the battlefield. Souham then turned against Clerfayt and compelled him to retreat to the northeast. In the course of the campaign. Clerfayt succeeded Prince Josias of Coburg in the supreme command, but he failed to make headway against the French, and had to recross the Rhine.

A Feldmarschall from 22 April 1795, he commanded on the middle Rhine against Jean-Baptiste Jourdan, and this time the fortunes of war changed. Clerfayt beat Jourdan at the Battle of Höchst and brilliantly relieved Mainz. But the Austrian Foreign Minister Johann Thugut did not approve Clerfayt's action in concluding an armistice with the French, so the field marshal resigned his command and became a member of the Aulic Council in Vienna. He died in 1798.

Clerfaytgasse in Hernals, Vienna is named after him.

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