特種警察
During Croatian chief of staff Janko Bobetko's visit to Gospić area, he and his team concluded that the situation on that area of the front was unsatisfatory. It was especially critical on Velebit mountain which was held by the members of Special police of the Croatian Ministry of Interior. In case that these positions become overrun, the city of Gospić would become semi-surrounded. Croatian lines were also harassed by constant intrusions of smaller recon-sabotage groups that operated behind enemy lines. On 4 September one such group attacked Croatian positions on Velebit which resulted in two Croatian policemen being killed.