The Croatian National Guard ( or ZNG) was an armed force established by Croatia in April and May 1991 during the Croatian War of Independence. Although it was established within the framework of the Ministry of the Interior for legal reasons, the ZNG was under the direct command of the Ministry of Defence. It was tasked with the protection of Croatia's borders and territory, and with tasks normally associated with police forces. The ZNG was formed with the transfer of special police units to the ZNG, establishing four all-professional brigades in May 1991, and was presented to the public in a military parade in Zagreb on 28 May. It was commanded by Defence Minister General Martin Špegelj before his resignation in early August. Špegelj was replaced by General Anton Tus, who became the first head of the General Staff of the Armed Forces of the Republic of Croatia (established on 21 September). During its development the ZNG experienced a number of problems, including shortages of weapons and ammunition, lack of uniforms, inadequate training and an overall deficiency in trained officers, and poor staff work and command structures (preventing the effective coordination of multiple units). These problems were offset by good morale, clear objectives and high levels of mobilisation. After the Battle of the Barracks, the ZNG expanded significantly with arms captured from the Yugoslav People's Army (Jugoslovenska Narodna Armija). By the end of October 60 new brigades and independent battalions were established, and on 3 November the ZNG was renamed the Croatian Army (Hrvatska vojska). Background In 1990, after the electoral defeat of the government of the Socialist Republic of Croatia by the Croatian Democratic Union (, HDZ), ethnic tensions between Croats and Croatian Serbs worsened. The Yugoslav People's Army ( – JNA) believed that Croatia would use the Croatian Territorial Defence Force's ( – TO) equipment to build its own army and confront the JNA. To minimize the expected resistance, the JNA confiscated the TO's weapons. On 17 August tensions escalated into an open revolt by the Croatian Serbs, centred on the predominantly Serb-populated areas of the Dalmatian hinterland near the southern town of Knin, parts of the Lika, Kordun and Banovina regions and eastern Croatia. They established a Serbian National Council in July 1990 to coordinate opposition to Croatian President Franjo Tuđman's policy of pursuing independence for Croatia. Milan Babić, a dentist from Knin, was elected president and