In 1705, he began his military career in the Hanoverian Army, fighting in the Battle of Ramillies on 23 May 1706 during the War of the Spanish Succession in the ranks of the Regiment of his uncle, General Alexander von der Schulenburg. When peace appeared imminent in 1713, he transferred into Prussian service.[2] From 1724 he commanded a Prussian dragoon regiment in Landsberg an der Warthe, which was later named after him. On 7 December 1728, Schulenburg and his brother Christian Günther von der Schulenburg received the hereditary nobility title of Imperial Count from EmperorCharles VI.[3]
Schulenburg gained the personal trust of King Frederick William I of Prussia. Through delicate missions on behalf of the ruler, he became a close advisor, experienced general and accomplished diplomat. During the conflict between the King and his eldest surviving son and heir, Frederick II (later Frederick the Great), Schulenburg was temporarily tasked with supervising the unruly Crown Prince.[4]
When the King died in 1740 and Frederick II came to power, the two conflicted Schulenburg's dragoon regiment was personally demoted by the new King. Nevertheless, the new ruler promoted him to Lieutenant general in 1740 and awarded him the Order of the Black Eagle, the highest order of chivalry in the Kingdom of Prussia. Because of the ongoing conflict between Schulenburg and the King, he asked to leave military service. Frederick II, however, refused and sent him to fight in the First Silesian War in 1741 where Schulenburg was killed on 10 April 1741 at the Battle of Mollwitz in southern Poland.[5]
Caroline Wilhelmine von der Schulenburg (1724–1782), who married Baron Ludwig Schenk von Wintersted, in 1748.[10]
Sophie Frederike Charlotte von der Schulenburg (1725–1772), who married her first cousin, Georg Ludwig I von der Schulenburg-Hehlen, a son of Christian Günther von der Schulenburg, in 1754.[11]
Maria Albertine von der Schulenburg (1726–1793), who married Georg Heinrich von Arnim, son of Hans Abraham von Arnim, in 1746.[1]
Friedrich August von der Schulenburg (1727–1797), who married Henriette Sophia von der Schulenburg, a daughter of Levin Friedrich III von der Schulenburg, in 1757.[1]
King Frederick William I gave him a piece of land near the Tiergarten in Berlin and financed the construction of the Schulenburg Palace there between 1736 and 1739. The building served as the family's Berlin town house. It was later acquired by Prince Antoni Radziwiłł before becoming the Reich Chancellery of Otto von Bismarck.[5]
After his death on 10 April 1741 in Małujowice, he was buried in the church in Beetzendorf, the ancestral home of the Schulenburg family. His children founded the Wolfsburg and Klosterrode branches of the von der Schulenburg noble family.[1]