Dolgorukov, now a major-general, served in the Seven Years' War, distinguishing himself at both the Siege of Küstrin and the subsequent Battle of Zorndorf in August 1758. For the valor he demonstrated at Küstrin, he would later be promoted to lieutenant-general and awarded the Order of Alexander Nevsky. Towards the end of this campaign Dolgorukov was wounded in the leg by canister shot, and had to seek treatment for his injury, but the General recovered in time to lead an infantry brigade at the Kunersdorf. He was also present at the Third Siege of Kolberg as one of Rumyanstev's subordinates. When Catherine the Great took power towards the end of the war, she made a point of favoring Dolgorukov for his service, having him promoted to general-in-chief on the day of her formal coronation. In 1767 she would award him the Order of St. Andrew, the highest order of knighthood in the Russian Empire.