In April 1945, negotiations were launched between Đurišić, Sekula Drljević, and the Ustaša for safe passage to German-occupied Slovenia and a safe-conduct agreement was formed.
He spent some time studying law in Zagreb where he became the Ustashe Youth member and later a member of the Croatian fascist Ustaša government (1941-1945) and one of the guards in the Jasenovac concentration camp.
On 27 January 1972, Serbian stewardess Vesna Vulović was the only person on board to survive the crash of JAT Yugoslav Flight 364 after Croatian Ustašas set up the bomb, which exploded 10,160 meters (33,000 ft) above Srbská Kamenice.
The Defence Brigades engaged in operations against both the Chetniks and Partisans, engaged in mass terror against the Serbian, Jewish and Romani segments of the NDH population, and administered the Ustaša concentration camps, including Jasenovac.
Petar Brzica was an Ustaša officer who, on the night of 29 August 1942, allegedly slaughtered over 1,360 people.