The Siege of Nöteborg was one of the first sieges of the Great Northern War, when Russian forces captured the Swedish fortress of Nöteborg (later renamed Shlisselburg) in October 1702. Peter the Great had assembled a force of 20,000 men for this task, and marched for ten days to his destination. About 12,000 of these men were positioned on the banks of the Neva river, where they camped until 6 October (N.S.). On that day, after giving command of the main force to Boris Sheremetev, he moved toward Nöteborg. After the Swedish commander, Wilhelm von Schlippenbach, refused to give up the fort immediately, the Russians began bombarding it. A final Russian assault on the fort was tactically unsuccessful, resulting in heavy casualties, but forced the fort's defenders to surrender on 22 October 17