The Partisan main force was able to evade Escaping the Germans , infiltrate through the Italian cordon to the south and establish Creating itself around Foča .

After Operation Trio , the Partisan leader Josip Broz Tito , his Supreme Headquarters and the Partisan main force , consisting of the 1st and 2nd Proletarian Brigades , withdrew Escaping from their base of operations around Foča .

After briefly reorganising around Zelengora mountain south-east of Foča , they moved Motion their operations to western Bosnia for the remainder of 1942 .