 Complete the following phrase:  From the start of the war, the Chetniks expelled Muslims and Croats from areas they controlled, and engaged in mass killings. In late 1941, they connected with various independent pro-Chetnik groups that participated in revolts against the Ustaše-led Independent State of Croatia NDH. With fascist Italys help, the Chetniks established a form of civil and military government in large parts of eastern Bosnia, which was followed by discriminatory measures and systematic massacres of non-Serbs in the region. The Chetnik genocidal campaign reached a peak between October 1942 and February 1943. Military defeats and the loss of Allied support compelled the Chetniks to moderate their policy towards Croats and Muslims. Despite these efforts, massacres of civilians continued until the end of the war. The terror tactics against the Croats were, to at least an extent, a reaction to the 