Complex sentence: Its advance was also supported by the 1st HGZ, which advanced to outflank the VRS near Šipovo, as well as the 60th Guards Battalion, the General Staff Reconnaissance Sabotage Company, heavy artillery and multiple rocket launchers.
Split into simpler sentences: Its advance was also supported by the 1st HGZ, which advanced to outflank the VRS near Šipovo. The assault was also supported by the 60th Guards Battalion, the General Staff Reconnaissance Sabotage Company, heavy artillery and multiple rocket launchers.