The Soviet takeover of the region started with the East Carpathian Strategic Offensive in the fall of 1944. This offensive consisted of two parts: the Battle of the Dukla Pass in effort to support the Slovak National Uprising; and the Battle of Uzhgorod to break through to the Hungarian plains and encircle German troops in Transylvania. On 28 October 1944, upon conclusion of the offensive campaign, most of Subcarpathian Ruthenia was secured by the Workers-Peasants Red Army (RKKA).