the most infamous of islamic ustase divisions was the 13th waffen mountain division of the ss handschar. in respect to the soldiers of muslim faith, a mosque was built in zagreb - croatia's capital city- known as "poglavnikova dzamija" or poglavnik's mosque. despite pavelić's assurances of equality with the croats, many muslims quickly became dissatisfied with croatian rule. a muslim leader reported that not one muslim occupied an influential post in the administration. fierce fighting broke out between the ustaše, chetniks and yugoslav partisans in ndh territory. some ustaše militia units became convinced that the muslims were communist sympathizers, and burned their villages and murdered many civilians.