Battle of Dubica

The Battle of Dubica (Bitka kod Dubice) was a battle fought on 16 August 1513 between the Kingdom of Croatia and the Ottoman Empire. The Croatian army was commanded by Petar Berislavić, Ban of Croatia, while the Ottoman one was mostly composed from forces of the Sanjak of Bosnia under command of sanjak-bey Junuz-aga. The two armies clashed near the town of Dubica in central Croatia, between the Sava and Una rivers. The battle resulted in a Croatian victory and heavy losses for the Ottoman side.

Background
After a few unsuccessful Ottoman attacks at the beginning of the 16th century, apart from minor frictions and looting at the border, there were no major conflicts in Croatia and Hungary. On 20 August 1503 King Vladislaus II concluded a 7 year peace treaty with Sultan Bayezid II and determined the borders with the Ottoman Empire. The armistice was generally respected and was renewed in 1511 for 5 years. However, sanjak-beys from the Sanjak of Bosnia have not honored the new ceasefire and were often ravaging the countryside of the Croatian border towns. At the end of August 1511 the county of Modruš was heavily damaged.

In April 1512 Sultan Bayezid II was forced to abdicate the throne and his son Selim I became the new sultan. Selim was more belligerent than his father and ignored all peace treaties signed with King Vladislaus, so Akıncı raids into Croatia became more frequent. In early Autumn 1512 The Ottomans conquered Srebrenik, Soko, Tešanj and Brčko, basically the entire Banate of Srebrenik. At the same time the Ottomans crossed the Sava River and plundered the Slavonian Posavina to Una's mouth into the Sava. Croatian capital Knin was besieged on 27 January 1513. These weren't simply raids like previous years, but a war campaign of a wider scale in order to establish the means for further conquests of Central Europe.

New Croatian Ban
In spring 1513 Emerik Perényi, Ban of Croatia, got ill and was replaced by Petar Berislavić, bishop of Veszprém. He fully pledged to stop the Ottoman invasion and defend the Croatian border on the line from Srijem, through Bosnia and Jajce, to Veliki Prolog in Dalmatia. Internal conditions in Croatia were also not favorable, aggravated by the increasing Ottoman danger. Centralist reforms of King Matthias Corvinus were abolished and the nobility reestablished their old privileges, gaining tax and war subsidies exemptions. Thus state revenues and military funding were drastically reduced. Some nobles even had an agreement with the Ottomans, paying them tributes and allowing their armies a free passage through their territory. Military deployment at Ban's disposal was much smaller following the defeat at the Battle of Krbava Field. In order to raise the necessary funds, the Ban implemented extraordinary burdens, taxed the Archdiocese in Zagreb and local parishes and even sold his own estates.

The new Ban of Croatia went to Rome in order to seek help for Croatia, where he received financial aid from Pope Leo X. On 13 June 1513, during the Fifth Council of the Lateran, bishop of Modruš Simon Kožičić Benja also presented the difficult position of Croatia that was under constant Ottoman attacks.

Battle
In early summer 1513 Ottoman forces, led by sanjak-bey Junuz-aga, entered the area between Una and Kupa rivers with 7,000 cavalrymen and attacked Blinja near Petrinja. When he heard about it, Croatian Ban Petar Berislavić assembled an army with Count Nikola III Zrinski (father of Nikola Šubić Zrinski), Mihovil Frankopan of Slunj and Franjo Berislavić, deputy ban of Jajce, aiming to prevent the Ottomans in further raids. The Croatian army went along the left bank of Sava up to Kraljeva Velika Fortress, then turned to Jasenovac where they crossed the Sava and went southwest, where Ban Petar Berislavić encamped near Dubica on 15 August. The Ottomans started building additional fortifications around their camp at Blinja when they found out about the Croatian army in Dubica, but after having heard that the opposing army was much weaker in numbers, the Ottomans decided to attack them first.

The following day on 16 August a huge battle started which ended in a heavy defeat for the Ottoman army. Estimates of Ottoman casualties range from over 2,000 to 7,000 killed, drowned while fleeing and imprisoned, together with a large number of freed Christian captives. Among them there were 4 killed and one captured army commanders.

Aftermath
News of the victory spread quickly. Ban Petar Berislavić was awarded a blessed sword from Pope Leo X on 25 December 1513, while King Vladislaus named him the Count of Dubica and Prior of Vrana. The defeat didn't discourage the Ottomans, with the beginning of 1514 they were again besieging Knin with 10,000 soldiers, but failed to capture the city. Ban Petar Berislavić spent 7 years in constant fighting with the Ottomans, faced with continuous money shortages and an insufficient number of troops, until he was killed in an ambush during the battle of Plješevica on 20 May 1520.