 Complete the following phrase:  Von der Gröben was born in Schrengen, East Prussia today Linkowo, Poland and joined the Prussian Army in 1806. He served under Anton Wilhelm von LEstocq in the a hrefWar20of20the20Fourth20CoalitionNapoleonic war of 180607a. In 1812 Gröben left the Prussian Army after Prussia had to deploy subsidiary troops in Napoleons Russian campaign and joined the Imperial Russian Army instead. He took part in the Battles of Lützen und Bautzen and returned to Prussian service, promoted to a Rittmeister in the Prussian General Staff in August 1813. Von der Gröben was wounded throughout the Battle of Dresden and fought in the 