Battle of Banja Luka
The Battle of Banja Luka was a battle in which the Ottoman Empire, led by Hekimoğlu Ali Pasha, defeated Austria. It took place on 4 August 1737 near the Bosnian town of Banja Luka. The Bosnian population was aware that Austrian forces would invade Bosnia during the war; to be exact, the energetic Bosnian vizier Hekimoğlu Ali Pasha predicted in 1737 that, without a declaration of war, a large Austrian army of over 14,000 soldiers would attack Bosnia. That's why he called a meeting in Travnik with the Bosnian captains and ayans to plan the defense. At this council, all captains and ayans, above all, ultimately demanded that all preparations for defense be carried out immediately, without the knowledge and consent of Porte; thus, the Ottoman forces were planning the defense without the help of Istanbul. Vizier declared a defense in the territory of Bosnia, and quickly gathered about 10,000 soldiers in the grassland. All captains in the then Bosnian army responded to the call. After the battle took place, the Bosniak army had won an absolute victory. Five assaults broke the Austrian force and forced it to flight, leaving 1,300 dead with the great heroism of Bosnian captains and combatants. The Battle of Banja Luka is considered to be one of the most important events in the history of Bosniaks.
Cause
While the Ottoman Empire was exhausted economically by the numerous wars, the so-called "European balance" of the military forces has been established. Austria-Hungary and Russia took the lead in this. At the end of the Vienna War, Slavonia, Lika, Krbava and Dalmatia belonged to Austro-Hungary; the Bosnian eyalet practically lost all territory west of the Danube – with the exception of Banat. Consequently, the Bosnian eyalet became the westernmost and most prominent possession in the Ottoman Empire. Bosniak soldiers fought mostly on other fronts; about 10,000 were sent to fight Russia, and only a small number returned. The Bosniak population did not trust that the Ottoman Empire would send reinforcements in the event of an attack. Disappointed with various experiences, Bosniaks form their own national identity. There was a belief that their fate could easily be the fate of Muslims of Hungary, Lika, Slavonia or Dalmatia, or that they would have to emigrate.Austria-Hungary envisioned 3 military operations in the Balkans:
- Occupation of Sanjak of Smederevo;
- Occupation Erdelj, Wallachia and Moldova;
- Complete conquest of Bosnia Eyalet.
Declaration of War
Austrian troops offensive
On 10 July, Austrian troops embarked on a march; after two days they reached Gradiška. Heavy rains fell, causing the Austrians to have difficulty crossing the Sava. Five days later, the crossing succeeded, with no significant resistance heading towards Banja Luka. The Austrian army reached Kiev, where Hildburghausen sent Field Marshal Muffling with 7 infantry battalion, of which 3 battalions consisted of Croatian allies, 400 horsemen and 4 cannons – to go to the detour to protect the Austrian army from a surprise attack.First fray
On 20 July, the Austrian army moved toward Jurkovići. This was the first significant battle with the Bosniak army, commanded by Sali Aga. Sali Aga had three groups, which surprised the Austrians. Sali Aga fought Muffling face-to-face: they hurt each other; Salih passed away immediately, while Muffling succumbed two days later. The Austrians won.The siege of Banja Luka
Two formations of the Austrian army – one under the command of Field Marshal Goldy and the other under Hildburghausen – joined in front of Banja Luka on 27 July. One kilometer from the Banja Luka fortress, the Austrian army raises a camp. Hildburghausen is demanding that the city be surrendered unconditionally, which the defense refusing it. The siege of the city begins, and after three days the Austrians regroup forces and on 27 July they begin artillery firing at the fort. Between 27 July and 4 August, approximately 1,800 shells were fired daily.The defense of Banja Luka was commanded by Mehmed Bey Ćatić; in the early days, the defenders gave strong resistance to the Austrian army. The cannon gunners of the Austrian army did not aim precisely and the cannons were moving forward, the city center being fired, forcing the civilian population to retreat deep into the underground walls.
Hildburghausen sends a letter to Captain Ćatić demanding that he surrenders:
Ćatić's officers declared they would not surrender and Hildburghausen received an answer:
Hekimoğlu Ali Pasha arrives to help
After the Austrians received news that Hekimoğlu Ali Pasha had set off with 15,000 troops to help the Banja Luka people, the city was even more heavily targeted. Ćatić sent a letter to the Travnik vizier, which was carried through enemy lines by disguised Bosniak soldiers. However, the letter did not reach the meadow vizier because they had already met the army of Hekimoğlu Ali Pasha and it had been handed over to him.On 3 August, Hildburghausen's scouts are informed that unknown soldiers were spotted in the surrounding woods; he makes the fatal decision not to follow it further. This enabled the Bosniak army to approach the Austrian camp unnoticed.
Hildburghausen expected that help would be given to the Bosniak army, and he regrouped the soldiers. Field Marshals Succoi and Rommer guarded the right wing while Major General Baranyay shifted the artillery to the left bank of Vrbas. A considerable number of soldiers were left in reserve.
While the Austrians regrouped, the defense troops did the same.
The right wing of the army, which came to the aid of the defenders, was commanded by Captain Mehmed Bey Fidahić; 4th sanjak of the Bosnian eyalet is placed on the left wing. Among the soldiers were ulema, muderis, etc. There were also Orthodox people faithful to the Bosnian Eyalet and Franciscans who provided material assistance to the army.
Prior to the arrival of assistance, the ratio of attackers to defenders was about 3 to 1; the Austrian army had about 17,000 and the Bosniak had 5,000.
The main battle
As soon as troops under the command of Hekimoğlu Ali Pasha attacked the Austrian army on the morning of 4 August, the defenders began to attack on the left bank of the Vrbas. Austrian troops, under the command of Baranyay, repel the onslaught of defenders. During the battle, the Austrian officers deviate from the schedule set by Hildburghausen, thereby unknowingly assisting the defenders; a big mistake was made by Baranyay for not deploying infantry. One part of the Austrian army was in keeping with the original order, so a disturbance was caused in their ranks, and it was not possible for the team to establish a single infantry line. Bosniak cavalry uses this and attacks the Austrian army center, causing them great losses.When the defenders manage to occupy the pontoon bridge, the Austrian troops on the left bank of the Vrbas begin to retreat. Mehmed Pasha, who noticed this, attacked with fierce Austrian troops who were still resisting.
Hildburghausen orders his troops to reinforce the left bank of the Vrbas, thereby aiding Baranyay. This move by Hildburghausen was later regarded as a major mistake of his, as it turned out that Baranyay was strategically incapable and unable to use reinforcement.
The Austrian army on the left bank of the Vrbas is trying to escape by crossing the river; many were non-swimmers and drowned in the waves. Five soldiers each held the horses' tail to cross the river. The right wing provided even more resistance; defense attorneys made five attacks during the day. On the evening of 4 August, Hildburghausen orders a withdrawal.
Chase after the Austrian army
Mehmed Ali-Pasha orders on 5 August to go after the Austrians. Since the Bosniak troops went partly unorganized in the pursuit, 500 soldiers lose near Klašnica when they reached the Austrian troops. On 13 August, Hildburghausen arrived in Slavonska Gradiška, where he awaited the rest of the army until 20 August.Consequences
About 600 defenders were killed, while the Austrian army lost about 300 troops in the direct combat. An unknown number of Austrian soldiers are estimated to have drowned in Vrbas alone from the Hildburghausen camp of 1,000. At least 1,200 soldiers were wounded.The Bosniak army seized 12 cannons, 315 tents, thousands of barrels, and many rifles, sabers and other military equipment.
The Croatian ban, who left Bužim after the defeat of the Austrian army, explained the defeat by the lack of heavy artillery. Austrian officers cited lack of discipline among soldiers as the main reason.