In the 1940s, this meant a Nazi puppet state, set up in Croatia and enjoying the patronage of the Vatican, which naturally sought to exterminate all the Jews in the region but also undertook a campaign of forcible conversion directed at the other Christian community. Tens of thousands of Orthodox Christians were either slaughtered or deported in consequence, and a vast concentration camp was set up near the town of Jasenovacs. So disgusting was the regime of General Ante Pavelic and his Ustashe party that even many German officers protested at having to be associated with it.

