 In a directive letter dated 30 July 1942 , Ostojić urged all Chetnik commanders to " develop the strongest possible oral and written propaganda " . He stated that , " the people must be persuaded that the Chetniks are their only friends and that it is from them that they can expect freedom and a happy life " and instructed the Chetniks to " work day and night and maintain the spirit of the people " . He wrote , " the hour of freedom is near . Allied aid for the Chetniks is assured , and the whole world is admiring them . " In August , he launched a counterattack against Ustaše troops returning to Foča as the Italians withdrew their garrisons from the hinterland . The Chetniks feared the Ustaše were about to unleash another round of genocidal violence on the Serb population in the area . At least 2 @,@ 000 local Muslims were subsequently killed in Foča by forces under Ostojić 's command . 
