 He decided to split from Mihailović and move toward the Slovene Littoral.Đurišić was joined by Dragiša Vasić, one of the chief Chetnik ideologues and Mihailović's political adviser, the detachments of Petar Baćović, leader of the Herzegovina Chetniks, and of Zaharije Ostojić, leader of the Eastern Bosnian Chetniks.Just before his departure, on 18 March, Đurišić was joined by a part of the Chetniks from Serbia.