Ever since 10 June, only a few insignificant engagements had been fought, with the exception of Vilsberg, on 2 September, where the Norwegians suffered heavy casualties. The Swedish king, Gustav IV Adolf, prioritized Finland more, and relocated several regiments from the Norwegian–Swedish border, to that front. Witnessing as the Swedish defenses progressively dwindled, and in retaliation for 2 September, the Norwegian major in Enningdal, Andreas Samuel Krebs, conducted a short offensive east, on 4 September, capturing 11 Swedes at Måsakasan.