The battle turned up to be a major engagement in the war where fierce artillery fire occurred from both sides.

[7] Kamensky, having sent detachments under the command of Colonel Vlastov and Major general Kazachkovsky to bypass the enemy's flanks, attacked the Swedish troops on September 1 from the front by the vanguard of Russian troops under the command of Colonel Kulnev, and then by the detachment of Major general Raevsky.

Meanwhile, detachments of Vlastov and Kazachkovsky bypassed the Swedish position and Klingspor, fearing being surrounded, in the night of September 2 retreated to the rear off Salmi village.

The enemy, pursued by Russian hussars, retreated in disarray to the north-west towards the town of Vaasa, unable to withstand the assault.

[2] According to Russian general Paul van Suchtelen [ru], the losses reached almost 2,000 in total, with an equal amount on both sides.