During the Bosnian War, so-called "rape camps", aimed at the birth of a new generation of Serb children, were reportedly used. The purpose of these camps was to impregnate the Bosnian and Croatian women. Because of the patrilineal make-up of their society, in which children inherit their father's ethnicity, this was used as a method of ethnic cleansing. In the camps, women were kept in confinement until the late stages of their pregnancies.