In September 1993, the Bosnian Government mounted the Neretva Operation, one of its most complex efforts to date, against the HVO. Units from the 1st, 3rd, 4th and 6th Corps of the ARBiH were subordinated to Sefer Halilović for the operation. The ARBiH troops launched coordinated attacks against HVO-held enclaves in the Lašva Valley and on the entire confrontation line from south of Gornji Vakuf to Jablanica, through Mostar and further southward to the Buna River. Units of the 9th Brigade, the 10th Brigade and the 2nd Independent Battalion, all subordinated to the ARBiH 1st Corps, were sent from Sarajevo to the Jablanica sector. In the Vitez area, during a simultaneous attack from the north and south, at one point the ARBiH broke through HVO lines in Vitez, but were ultimately forced back.