 In 1578, Commonwealth forces scored a number of victories in Liviona and begun pushing Ivan's forces back; this marked the turning point in the war.Báthory, together with his chancellor Zamoyski, led the army of the Commonwealth in a series of decisive campaigns taking Polotsk in 1579 and Velikiye Luki in 1580.In 1581, Stephen penetrated once again into Russia and, on 22 August, laid siege to the city of Pskov.