The first phase of the confrontations in the summer of 1848 In the spring of 1848, the assemblies of the Serbs held in Pest and
Újvidék (Novi Sad) demanded recognition of Serbs as a nation and abolition of feudalism in the Military Frontier. When the envoys of the Serbs appeared in Pozsony, Kossuth informed them that they could not be recognized as an independent nation. This was because the new
Liberal concept of a nation brought by the revolution was that in Hungary only one political nation could exist, and that was the Hungarian nation. The term 'Hungarian nation' referred to all the people of different languages living in Hungary. Kossuth and the Hungarian politicians knew that accepting political nations other than the Hungarian within the country would lead to the separation of those nations from Hungary. This would result in the dismemberment of the country. On 13–15 May 1848, the Serb National Assembly in
Karlóca established the Serb Main Committee (also known as the "Main Odbor"), followed by the formation of various districts and local committees in late May and early June. The Orthodox
Archbishop Josif Rajačić was initially elected as the chairman of the Main Odbor, but later resigned and was replaced by
Đorđe Stratimirović, who had previously served as an officer in the K.u.K. army and had the necessary skills to organize an armed force. Rajačić traveled to Zagreb in early June, where he formed an alliance against the Hungarians with the leader of the Croatian movement, Josip Jelačić. Their involvement played a crucial role in the outcome of the Karlóca national assembly and in the intense fighting that began in mid–June, which often degenerated into gruesome massacres against the civilians. On 8 June, the Hungarian government ordered
Lieutenant-General János Hrabovszky, the commander-in-chief of the Slavonia and Syrmia (Szerémség) regions, to put an end to the increasingly dangerous movement of the Serbs and even disperse by force of arms the Main Odbor from Karlóca. The
Battle of Karlóca that started, was the first clash of the Hungarian War of Independence. This success further inflamed the Serb insurrection. The Serb border guards started to set up fortified camps, from which they attacked the German, Romanian, and Hungarian settlements of Bácska and Bánság (Banat), expelling, conquering and even massacring some of their population. In the fights during July and August, despite some Hungarian victories (the battles of
Versec,
Écska,
Futak,
Fehértemplom), due to the obstruction of the defense by the majority of the Austrian officers, the incompetence or lack of determination of the Hungarian commanders, the Serbs took over most of the Southern Banat and Southern Bácska regions, being greeted by a part of the Serb population, and forcing those who were reluctant with promises or threats to join. Between the second part of July and the first half of August, the Hungarians lost one after other important localities as
Bácsföldvár, Pancsova,
Uzdin,
Kovacsica,
Padina,
Jarkovác, Margitica,
Tomasevác,
Neuzina,
Szárcsa,
Szécsány,
Ernesztháza,
Bóka, the only town which withstood the Serb attacks was
Fehértemplom, which repelled two Serb attacks on 19 and 30 August. Despite the apparently neutral stance of the Habsburg government, Ferdinand Mayerhofer von Grünbühel, the Austrian consul in Belgrade, was one of the main supporters of the anti-Hungarian efforts of the Serbs and the participation of Serbian volunteers in the fighting. The Belgrade consul first played a major role in encouraging the volunteers who came from the Principality of Serbia to come to Hungary to fight the Hungarians and then sought to promote an alliance between the Serbs and Croatian Ban Josip Jelačić. Later, during the winter months, he took over the command of the joint Austrian–Serb corps, and led it against the Hungarian units. The first notable Hungarian success of the war in the south was the
capture of the Serb fortified camp from Perlasz on 2 September. The Hungarians, however, did not take advantage of the success, and the start of the Croatian campaign in
Transdanubia starting on 11 September caused the Hungarian troops to retreat to defensive positions. The most important Serb fortified camp established in Bácska,
Szenttamás, was located on the banks of the
Franz Canal. Taking advantage of the natural conditions, by the end of June 1848, the Serbs had established a substantial system of entrenchments around the settlement. The Hungarians
repeated the attack on 19 August, but the Serbs again repulsed the attack. On 21 September, the Minister of War,
General Lázár Mészáros, attempted the
to take Szenttamás again, but this siege also failed. It is worth noting that some talented Hungarian generals stood out during the fighting, which had been going on since the summer. They later gained great fame in the main theatre of war, like János Damjanich or Károly Leiningen-Westerburg. Military units were also formed here that would later gain legendary fame, such as the 3rd (White-Feathered) and 9th (Red-capped) Honvéd Battalions. ==Battles==