Great Turkish War

The Battle of Buda in 1686 was fought between a Holy League force of 65,000–100,000 and an Ottoman garrison of approximately 7,000, under commanders including Charles V, Duke of Lorraine, Louis William, Margrave of Baden-Baden, Paul I, Prince Esterházy, and Ernst Rüdiger von Starhemberg on the Holy League side, and Abdurrahman Abdi Arnavut Pasha and Sarı Süleyman Paşa for the Ottoman Empire. Despite the pronounced disparity in force sizes, Holy League casualties reached approximately 20,000 against Ottoman losses of around 3,000, indicating the severity of the fighting relative to the defenders' numbers. The engagement formed part of the broader Holy League campaign to roll back Ottoman control of Hungary during the Great Turkish War, a conflict that would ultimately result in the Habsburg recovery of large portions of the Hungarian kingdom from Ottoman administration.

The second Battle of Mohács, fought on 12 August 1687 during the Great Turkish War, pitted a Holy Roman Empire force of 40,000 under Charles of Lorraine, Maximilian II Emanuel, Margrave Ludwig Wilhelm, Enea Silvio Piccolomini, Eugene of Savoy, and Nils Bielke against an Ottoman army of 60,000 commanded by Sarı Süleyman Paşa. The outcome inflicted approximately 10,000 Ottoman casualties against Imperial losses of around 2,000, a disparity that pointed to a decisive Imperial victory. The engagement carried symbolic as well as strategic weight: Mohács was the same ground where Ottoman forces had crushed the Kingdom of Hungary in 1526, and a victory there in 1687 marked a pronounced reversal of Ottoman fortunes in the broader Great Turkish War. The battle accelerated the Imperial reconquest of Hungary and contributed to the political crisis within the Ottoman state that followed successive military reverses during this period of the war.

The Siege of Belgrade on 30 July 1688 was a significant Habsburg offensive operation within the Great Turkish War, resulting in a Habsburg force of 34,000 — commanded by Maximilian II and including Eugene of Savoy and Jovan Monasterlija — engaging an Ottoman garrison and relief force estimated at 25,000–30,000 under Yeğen Osman Pasha. Habsburg casualties of 4,000 against Ottoman losses of 5,000 indicate a hard-fought engagement despite the numerical advantage held by the attackers. Belgrade occupied a strategically critical position controlling access between the Danube and Sava river systems, making its capture a principal objective of the Habsburg advance deep into Ottoman-held territory during this phase of the war.

The Battle of Slankamen, fought on 19 August 1691 near Slankamen in the Ottoman Sanjak of Syrmia, was a major engagement of the Great Turkish War between Habsburg Austrian forces and the Ottoman Empire. The scale of losses on both sides attests to the intensity of the confrontation: the Holy Roman Empire suffered approximately 7,300 casualties against an Ottoman force of 50,000, while Ottoman losses reached an estimated 25,000 — a figure that dwarfed the Habsburg toll and pointed to a decisive Habsburg tactical success despite the significant disparity in force sizes. Among the Ottoman commanders present was Mustafa Köprülü, whose death or defeat at engagements of this kind carried strategic consequences for Ottoman command continuity during the war. On the Habsburg side, Ludwig Wilhelm's leadership anchored a force estimated between 20,000 and 33,000. The battle formed part of the broader Habsburg offensive momentum that characterized the later phases of the Great Turkish War, a conflict that would culminate in the Treaty of Karlowitz in 1699 and a significant Ottoman territorial retreat in central Europe.

The Battle of Ulaş, fought on 26 August 1696 near the Bega River, arose when a Habsburg Imperial army under Augustus II the Strong abandoned its siege of Ottoman-held Temesvár upon learning that Sultan Mustafa II's relief force was crossing the Danube at Pancsova. The engagement ended in a tactical draw, with the Holy Roman Empire sustaining between 3,000 and 6,000 casualties against approximately 4,000 on the Ottoman side, and both armies withdrawing from the field. Despite the inconclusive battlefield outcome, the strategic result favored the Ottomans: by forcing Augustus to lift the siege, Mustafa II's relief operation preserved Ottoman control of Temesvár. Within the broader Great Turkish War, the retention of Temesvár represented a meaningful check on Habsburg expansion into the Danubian frontier, demonstrating that Ottoman forces could still mount effective strategic counter-operations even as the war's overall trajectory moved against them.

The Battle of Zenta, fought on 11 September 1697 near Zenta in the Kingdom of Hungary, was a decisive engagement of the Great Turkish War and one of its most consequential Ottoman defeats. A Habsburg force of approximately 50,000, commanded by Eugene of Savoy on behalf of Leopold I, inflicted casualties estimated at 30,000 on an Ottoman army that may have numbered twice the size of the force opposing it, while sustaining fewer than 1,600 losses of its own. The disparity in casualties underscored the scale of the Ottoman collapse. As a climactic engagement of the Great Turkish War, Zenta effectively broke Ottoman military capacity to contest the conflict and contributed directly to the conditions that produced the Peace of Karlowitz in 1699, which ended the war and marked one of the most significant territorial retreats in Ottoman history in Europe. The battle confirmed Habsburg dominance in the middle Danube region and effectively ended meaningful Ottoman military presence in the Kingdom of Hungary.