Already in September 1943, large portions of the region were taken over by the Communist-led Liberation Front of the Slovenian People, which established several important bases in the area, including the famous Franja Partisan Hospital.
Juba septembris 1943 oli suure osa piirkonnast üle võtnud kommunistide juhitud Sloveenia Vabastusrinne, mis rajas piirkonnas mitu olulist baasi, sealhulgas kuulsa Franja Partisanihospitali.