At the age of twelve, Maurice served in the
Imperial Army under
Prince Eugene of Savoy, at the sieges of
Tournai and
Mons and at the
Battle of Malplaquet during the
War of the Spanish Succession. A proposal at the end of the campaign to send him to a
Jesuit college in
Brussels was dropped due to the protests of his mother. Upon his return to the camp of the Allies at the beginning of 1710, Maurice displayed a courage so impetuous that Prince Eugene admonished him to not confuse rashness with valour. He next served under
Peter the Great against the
Swedes in the
Great Northern War. In 1711, Augustus formally recognized him and Maurice was granted the rank of
Count (Graf). He then accompanied his father to
Pomerania, and in 1712 he took part in the
Battle of Gadebusch. At the age of 17 in 1713 he commanded his own regiment of the
Royal Saxon Army. As an adult, Maurice bore a strong resemblance to his father, both physically and in character. His grasp was so powerful that he could bend a horseshoe with his hand, and even at the end of his life, his energy and endurance were scarcely affected by the illnesses his many excesses had caused. On 12 March 1714, a marriage was arranged between him and one of the richest of his father's subjects, Countess Johanna Viktoria Tugendreich von Loeben, but he dissipated her fortune so rapidly that he was soon heavily in debt. The next year (21 January 1715), Johanna gave birth to a son, called August Adolf after his grandfather; the child only lived a few hours. Since Maurice had also given her more serious grounds of complaint against him, he consented to an annulment of the marriage on 21 March 1721. After serving
Charles VI, Holy Roman Emperor in
a campaign against the
Ottoman Empire in 1717, he went to Paris to study mathematics, and in 1720 obtained a commission as
Maréchal de camp. In 1725, he entered negotiations for election as Duke of
Courland, at the insistence of the Duchess
Anna Ivanovna, who offered him her hand. He was chosen duke in 1726, but declined marriage with the duchess. He soon found it impossible to resist her opposition to his claims, but with the assistance of £30,000 lent him by the French actress
Adrienne Lecouvreur, he raised a force by which he maintained his authority till 1727, when he withdrew and took up residence in Paris. Lecouvreur was to die mysteriously shortly afterwards: there is controversy as to whether or not she was poisoned by her rival,
Louise Henriette Françoise de Lorraine,
Duchess of Bouillon. At the outbreak of the
War of the Polish Succession, Maurice served under
James FitzJames, 1st Duke of Berwick, and for a successful manoeuvre at the
Siege of Philippsburg he was named
lieutenant-general. In the
War of the Austrian Succession he took command of an army division sent to invade
Austria in 1741, and on 19 November 1741,
surprised Prague during the night, and seized it before the garrison was aware of the presence of an enemy, a
coup de main which made him famous throughout Europe; he thus repeated the
exploit of 1648 of his maternal great-grandfather,
Hans Christoff von Königsmarck. After capturing the fortress of
Eger (Cheb) on 19 April 1742, he received a leave of absence, and went to Russia to push his claims for the Duchy of Courland, but returned to his command after getting nowhere. by
Jean-Étienne Liotard Maurice's exploits were the sole redeeming feature in an unsuccessful campaign, and on 26 March 1743, his merits were rewarded by promotion to
Marshal of France. He had been given only 50–60,000 men to defend against an enemy army twice as large. From this time on, he became one of the great generals of the age. In 1744, he was chosen to command the 10,000 men of the
French invasion of Britain on behalf of
James Francis Edward Stuart, which assembled at
Dunkirk but did not proceed more than a few miles out of harbour before being wrecked by disastrous storms. After its termination, he received an independent command in the
Austrian Netherlands, and by skilful manoeuvring succeeded in continually harassing the superior forces of the enemy without risking a decisive battle. In the following year, Maurice with 65,000 men
besieged Tournai and inflicted a severe defeat on the army of the
Duke of Cumberland at the
Battle of Fontenoy, an encounter determined entirely by his constancy and cool leadership. During the battle, he was unable to sit on horseback due to
edema, and was carried about in a wicker chariot. File:The Battle of Fontenoy, 11th May 1745.png|The
Battle of Fontenoy, 11 May 1745, showing Maurice de Saxe presenting the captured British and Dutch prisoners and colours to
Louis XV and the
Dauphin File:Bataille de Lawfeld, 2 juillet 1747.jpeg|
The Battle of Lauffeld by
Auguste Couder, 1836. 2 July 1747: Louis XV pointing out the village of Lawfeld to Maurice In recognition of his achievement,
Louis XV conferred on him the
Château de Chambord for life, and in April 1746, he was naturalised as a French subject. Until the end of the war, he continued to command in the Netherlands, always with success. Besides Fontenoy he added
Rocoux (1746) and
Lawfeldt or Val (1747) to the list of French victories. He led the French force which
captured Brussels and it was under his orders that Marshal
Löwendahl captured
Bergen op Zoom. He himself won the last success of the war in
capturing Maastricht in 1748. Saxe invented a handheld light-artillery piece that he called an
amusette, which fired a half-pound ball a distance of 4,000 paces at a rate of 100 shots an hour. In 1747 the title once held by
Turenne and
Villars, "Marshal General of the King's camps and armies", was revived for Maurice. But on 20 November 1750 he died at the
Château de Chambord "of a
putrid fever". During the last years of his life, Maurice had an affair with a French lady, Marie Rinteau, who at that time was only eighteen years old. In 1748 she gave birth to a daughter, the last of Maurice's several illegitimate children. She was called
Maria Aurora (in
French: ) after her grandmother. She bore the surname until 1766 when the
Parlement of Paris formally recognized her parentage and she could assume the surname of or . Marie Aurore married firstly in 1766 with Antoine, Count of Horne (1735–1767), an alleged illegitimate son of Louis XV. By her second marriage with Louis Claude Dupin de Francueil (in 1777), she was the grandmother of Amandine Lucile Aurore Dupin, who later became famous as the writer
George Sand. Maria Aurore died on 25 December 1821 when her granddaughter George Sand was seventeen. Sand included details of her grandmother's parentage in her memoirs. ==Writings==