 The rest were supposed to feign the acceptance of an agreement with Drljević and try to reach Slovenia.The attempt of the main army failed and in the morning of 7 April, the HOS amassed its forces near Razboj and began an artillery bombardment of Chetnik positions at around 11 AM, followed by a combined tank-infantry assault.The tanks and armoured vehicles broke the Chetnik right flank, held by the Drina Corps, and circled to their rear.