The guards brigades were the only units of the ZNG that were fully armed with small arms; throughout the ZNG there was a lack of heavier weapons and there was no command and control structure.[10] The shortage of heavy weapons was so severe that the ZNG resorted to using World War II weapons taken from museums and film studios.[12] At the time, Croatian stockpile of weapons consisted of 30,000 small arms purchased abroad and 15,000 previously owned by the police. A new 10,000-strong special police was established then to replace the personnel lost to the guards brigades.[10]