[2] Lack of funds and poor help from the weak Hungarian kings of Jagellonian dynasty resulted in ever increasing depopulation of Croatian lands, burdened by constant state of warfare.

[3] As a result of Ottoman conquests, center of the Croatian medieval state gradually moved northwards into Slavonia (Zagreb).

[5] After Hungarian defeat in Battle of Mohacs in 1526 and ensuing succession crisis inside the Hungarian-Croatian kingdom, the Ottomans made use of this dissolution, by further taking large parts of Hungary, Slavonia, Croatia and Dalmatia in first half of the 16th century.

In the year 1683, a massive army was assembled and sent off across Ottoman Balkan and Hungarian territories in order to attack and besiege Vienna.

[9] For example, back in March 1682, Croatian friar Luka Ibrišimović sent letters to bishop of Zagreb, informing him of increased Ottoman activities in Slavonia such as: collecting food and augmenting fortifications and bridges.

Same year in May, he sent another report of Ottomans making lists of all available soldiers in Slavonia and stockpiling their large cannons in Osijek.

[10] With that in mind, between 1682 and 1683 Croats began with their own preparatory measures[9] such as intense communication with emperor Leopold, Styrian and Carniolan nobility, as well as the Pope; who even sent some financial aid.

[9] The grad vizier Kara Mustafa apparently also dispatched letters, trying to persuade Croatians to join his army in attack on Vienna, but these were rejected.

These include members of families: Keglević, Ratkay, Jelačić of Bužim, Patačić, Ilijašić, as well as Pavao Ritter Vitezović who received the title of knight.

On lower levels, his troops were commanded by Franjo Oršić, Stjepan Vojnović of Ogulin, captain Ivan Juraj Gusić of Tounj, count Adam Purgstal and Marko Mesić.

[20] The desperate Ottoman defenders used ropes to allow for women and children to escape, while troops which remained inside the fort were burnt to death.

[21] This joint army marched off from Karlobag across Velebit mountain which they crossed through Oštarije pass and eventually reached Lički Novi on June 15.

[21] When news about the fall of Novi spread throughout Lika, troops from other nearby Ottoman outposts, such as Ribnik, also withdrew to Udbina.

[21] Ottomans attempted several sorties in order to reach the nearby water sources, resulting in skirmishes with the Christian troops, but to no avail.

[22] By 17 July, the thirst inside Udbina was so grave that Ottoman defenders apparently had to resort to drinking animal blood.

[22] In return for Herberstein accepting their surrender, Ottomans had to leave behind all their weaponry; cannons, banners and large rifles, as well as a group of hostages.

[1] Although emperor Leopold made promises that newly liberated territories will fall under jurisdiction of Croatian ban, in the end the imperial Court Financial Chamber grabbed real political power.

[30] On demographic picture, due to five years of permanent and destructive warfare, after wars ceased, the lands of Slavonia remained almost empty.

[31] After Eugene of Savoy, made his incursion in Bosnia and burnt down Sarajevo in 1687, a large group of Christian settlers, fleeing from the Ottoman reprisal settled in Slavonia.

[34] Since they were eliminated as a result of magnate conspiracy, their eventual decision was to incorporate these territories into Karlovac Generalcy of Croatian Military Frontier in 1712.

[23] Up until 1703, the status of Banska krajina remained undefined since it was not possible to reconcile the interests of Austrian military authorities, Croatian feudal elites and newly settled Vlach population.