喀斯特
The two organization were formed mostly by Slovene progressive nationalist youngsters from Trieste, the Karst Plateau, Inner Carniola, and the Tolmin district. Between 1927 and 1930, the organization launched numerous attacks on individual members or supporters of the National Fascist Party (both Italian and Slovene), and also killed several members of repressive forces: carabinieri, border guards, military personnel.