To act against Serbs and Jews with genocidal measures, the Ustase introduced widespread measures that Croats themselves were victim to. Jozo Tomasevich in his book, "War and Revolution in Yugoslavia: 1941-1945", states, ""never before in history had Croats been exposed to such legalized administrative, police and judicial brutality and abuse as during the Ustasha regime."" Decrees enacted by the regime allowed it to get rid of all 'unwanted' employees in state and local government and in state enterprises. The 'unwanted' (being all Jews, Serbs, and Yugoslav-oriented Croats) were all thrown out except for some deemed specifically needed by the government. This left a multitude of jobs to be filled by Ustashas and pro-Ustasha adherents and led to government jobs being filled by people with no professional qualifications.