Louis William, Margrave of Baden-Baden (German: Ludwig Wilhelm von Baden-Baden; 8 April 1655 – 4 January 1707) was the ruling Margrave of Baden-Baden in Germany, chief commander of the Imperial army and Reichsgeneralfeldmarschall of the Holy Roman Empire. He was also known as Türkenlouis ("Turkish Louis") for his numerous victories against Ottoman forces. After his death in 1707, his wife, Sibylle of Saxe-Lauenburg, acted as regent of Baden-Baden during the minority of his eldest son, who succeeded him as Margrave of Baden-Baden.
His mother's brother was the Count of Soissons, father of the renowned general Prince Eugene of Savoy, whose military career would start in the shadow of Louis, Eugene being Louis's junior; the cousins would serve together the Holy Roman Emperor against the French in several campaigns. His parents being estranged, his father took him with him when he left from his wife's home in Paris to Germany. There, Louis was raised by his grandparents.[1]
Louis came to be called the Türkenlouis or shield of the empire. The Turks called him the red king, because his red uniform jacket made him very visible on the battlefield. He was known as a defender of Europe against the Turks, as was Eugene of Savoy.[citation needed]
As a military commander in the service of the Holy Roman Empire, in 1689 he was made chief commander of the Imperial army in Hungary, where he scored a resounding victory against the Ottomans at Slankamen in 1691. Louis saw Osijek as a location of exceptional strategic importance in the war against the Ottomans.[3] He urged the repair of the city walls, and proposed construction of a new fort called Tvrđa, according to Vauban's principles of military engineering.[3][4]
After a fruitless campaign in 1692 due to a lack of funds and soldiers, he was appointed to the Upper Rhine at the request of the Swabian and Franconian Imperial circles. At the head of the circle troops that formed the Army of the Holy Roman Empire he defended the Rhine against superior French forces in the War of the Grand Alliance. Despite his military successes, his opposition against the elevation of the Prince of Calenberg to Elector of Brunswick-Lüneburg made him enemies at the Vienna Court.[1]
At the Battle of Schellenberg in July 1704, Ludwig Wilhelm had suffered a wound that did not fully heal. He continued to command on the Upper Rhine without treating the injury and died as a result of this wound on January 4, 1707 at the age of 51 in his unfinished Schloss Rastatt. His wife took up a regency for their son, Louis George. The latter took over the government from his mother in October 1727.[1]
Seventeen years after the margrave's death, the only one of his daughters to survive childhood, Princess Auguste, married Louis d'Orléans, son of the infamous French Regent and, at the time of the wedding, first in the line of succession to the throne of France.[citation needed]
After the death of Louis, his widow built Schloss Favorite castle as a summer residence in memory of her husband. He was buried at the Stiftskirche in Baden-Baden.[citation needed]