The order was presumed to have remained effective until it was countermanded on 21 July. Impact on survivors According to a 1998 qualitative study involving survivors of the column, many of the members of the column exhibited symptoms of hallucinations to varying degrees. On a number of occasions, Bosniak men began attacking one another in an apparent fear that the other member in the column was a Serb soldier. Members of the column also reported seeing people speaking incoherently, running towards VRS lines in a fit of rage and committing suicide using firearms and hand grenades. Although there was no evidence to suggest what exactly caused the behavior, the study suggested that fatigue and stress may have induced these symptoms. Plan to execute the men of Srebrenica Although Serb forces had long been blamed for the massacre, it was not until June 2004—following the Srebrenica commission's preliminary report—that Serb officials acknowledged that their security forces planned and carried out the mass killing. A Serb commission's final report on the 1995 Srebrenica massacre acknowledged that the mass murder of the men and boys was planned. The commission found that more than 7,800 were killed. A concerted effort was made to capture all Bosniak men of military age. In fact, those captured included many boys well below that age and elderly men several years above that age who remained in the enclave following the take-over of Srebrenica. These men and boys were targeted regardless of whether they chose to flee to Potočari or to join the Bosnian Muslim column. The operation to capture and detain the Bosnian Muslim men was well organised and comprehensive. The buses which transported the women and children were systematically searched for men. Mass executions The vast amount of planning and high-level coordination invested in killing thousands of men in a few days is apparent from the scale and the methodical nature in which the executions were carried out. The Army of Republika Srpska took the largest number of prisoners on 13 July, along the Bratunac-Konjević Polje road. It remains impossible to cite a precise figure, but witness statements describe the assembly points such as the field at Sandići, the agricultural warehouses in Kravica, the school in Konjević Polje, the football field in Nova Kasaba, the village of Lolići and the village school of Luke. Several thousand people were herded together in the field near Sandići and on