end of July the small forces Sweden had landed and the men that had supported them were either beaten or withdrawn back to their ships. August–September 1808 After the Russians were driven from Central Finland, their forces stretched along the line of Pori–Tampere–Mikkeli. Having received considerable reinforcements, their numbers increased to 55,000, as opposed to the 36,000 estimated for Sweden. On 14 August, Count Nikolay Kamensky decided to use this numerical superiority to launch a new offensive. Kamensky's 11,000-strong corps achieved important victories at Kuortane (1 September) and Salmi (2 September), and although Georg Carl von Döbeln won the Battle of Jutas for Sweden on 13 September, Kamensky gained the most important victory at Oravais on 14 September. Swedish attempts to land more troops near Turku were stalled by Lieutenant-General Pyotr Bagration's prompt actions. In Eastern Finland, the guerrilla movement was gradually extinguished. As a consequence, Russia's situation in Southern Finland improved significantly. In the north, the situation was more complicated. Tuchkov's battered unit strained to hold its own against Sandels, while the progress of a relief force under General Alekseyev was contained by guerrilla fighters. It was not until 26 September that Prince Dolgorukov (Alekseyev's replacement) managed to join his forces with Tuchkov's, inducing Sandels to retreat. Three days later, Buxhoeveden—pressed by the early onset of winter weather—signed an armistice, much to the dismay of Alexander I. The emperor refused to ratify the truce and replaced Buxhoeveden with a new commander-in-chief, Bogdan von Knorring, in December of that year. In the south, the Swedish battle fleet remained anchored within the Finnish archipelago, blocking some of the deeper coastal sea routes from Hangö towards Åbo. Russian ships continued to arrive from the east but remained within the shallow narrows where the Swedish ships of the line could not reach. Small boat actions took place during the night time of 17–18 July which became known as the skirmish at Lövö (). However, the Swedish fleet dropped its blockade on 22 August, allowing the Russian coastal units to unite. Odds were very much against the Swedes as the Russians had nearly one hundred coastal ships in the Finnish archipelago, against which Sweden could deploy only 7 galleys and 30 gun sloops. Swedish efforts to harass the Russians with landings continued, with roughly 1,000 volunteers under Captain Anders Gyllenbögel landing on 1 August to support Swedish-led uprisings on the coast south of Vasa.