pavelić remained in italy until the beginning of world war ii. as the leader of the ustaše he directly ordered, organized and conducted a campaign of terror against serbs, jews, gypsies, and communist croats and bosniaks. the extent of this campaign reached the proportions of genocide. pavelić's ustaše regime was the most murderous nazi puppet state in the whole of occupied europe. numerous surviving testimonies from the nuremberg trials and the german and the italian war archives bear witness to bestialities perpetrated against the civilian population of the state. according to these testimonies, the german officers themselves were horrified by the scenes of atrocities committed by his ustaše, forcing them to stop the bloodshed (jasenovac, 1941), arrest one of the most notorious ustaše (fra miroslav filipović-majstorović, banja luka, 1942) and disarm an ustaše detachment (eastern bosnia, 1942).