 Complete the following phrase:  Alexejev, who feared a Swedish follow-up on Sortavala, requested reinforcements which he received from the army at Kuopio; although he was soon replaced by Mikhail Petrovich Dolgorukov, who advanced towards the Swedish positions at Toivala only after Sandels had recalled his forward contingents by mid-September. On 29 September Dolgorukov stood at Jännevirta, threatening the left flank of the Swedish positions at Toivala; Sandels, however, upon hearing the news of the Swedish defeats at Karstula and RuonaSalmi, combined with the threat at his left flank, ordered a retreat towards Koljonvirta, near Iisalmi. Tuchkov occupied Toivala by 30 September. The armistice at Lohteå, which was signed on 3 October, further confirmed the Swedish setbacks to the west. Sandels and Tuchkov would encounter each other again at the 