The National Liberation Front (NOF) was organized by the political and military groups of the Slavic minority in Greece, active from 1945 to 1949. The interbellum was the time when part of them came to the conclusion that they are Macedonians. Greek hostility to the Slavic minority produced tensions that rose to separatism. After the recognition in 1934 from the Comintern of the Macedonian ethnicity, the Greek communists have also recognized Macedonian national identity. Soon after the first "free territories" were created it was decided that ethnic Macedonian schools would open in the area controlled by the DSE. Books written in the ethnic Macedonian language were published, while ethnic Macedonians theatres and cultural organizations operated. Also within the NOF, a female organization, the Women's Antifascist Front (AFZH), and a youth organization, the National Liberation Front of Youth (ONOM), were formed.