The Swedes abandoned their position at Nummijärvi after the battle at Lappfjärd, as the 2nd Swedish division received orders from the Swedish headquarters to join up with the Swedish main army at Kuortane, in advance of the Battles of Salmi and Ruona; however, due to a series of conflicting orders and misunderstanding the 2nd division didn't reach the Swedish main army in time before the battle—while the road junction at Kauhajoki was easily captured by Usjakov as the 150 defenders were forced to retreat with a loss of 25 men. The Russians had lost 40 men.
