At the Battle of Hochkirch, his cavalry, and that of Seydlitz, provided the rear guard for the Prussian withdrawal. During the attack at Domstadt, he could not prevent the loss of a large supply convoy. During the Battle of Liegnitz on 15 August 1760, he managed to keep the Austrian main army at bay so that it could not participate in the battle. Zieten was promoted to general of cavalry. He made one of the few tactical mistakes of his career early in the Battle of Torgau, 3 November 1760, when he misdirected an attack against the Austrian troops; he made up for this error when he and his hussars stormed the Süptitzer heights. Finally, it was Zieten who, in 1761, took the King out of a deep spiritual crisis while the army was entrenched at Bunzelwitz. Until the end of the war, he was repeatedly entrusted with the supreme command of the Prussian army in the absence of the king. By the end of the war, Zieten belonged to the elite of the kingdom and the inner circle of friends of the monarch. After the Seven Years' War, Zieten retired from active service, widely considered a hero. During the War of the Bavarian Succession, Frederick forbade him to go, so he stayed on his estate at Wustrau with his niece, Johanna von Blumenthal, whose son was serving in his regiment. During this period she gathered his reminiscences for a biography. In the subsequent years of peace, the old army commander remained a tireless instructor of his now legendary Hussar regiment. In his last years of life, Zieten alternated between Berlin, where he bought a house in 1763 on Kochstrasse No. 61–62. and on his property at Wustrau, where he devoted himself mainly to charity. At the same time, he worked with great care to improve his property. He enjoyed the special trust of Frederick, who frequently visited "his old father Zieten." In one visit with the King, at Sanssouci, after a long conversation, the King ordered a chair to be placed on which he invited the 85-year-old man to sit. Despite his infirmities, Zieten refused to sit in the presence of the monarch; the King said: "Sit down, Zieten, or I will go away." On 26 January 1786, Zieten died in his bed in Berlin, a remarkable age considering his hair-trigger temper and his reputed 74 duels.