Austro-Turkish War: The Ottoman army were defeated in their attempt to capture the Habsburgs-controlled Petrovaradin Fortress despite having double the number of soldiers.

The Austro-Turkish War (1716–1718) was fought between Habsburg monarchy and the Ottoman Empire. The 1699 Treaty of Karlowitz was not an acceptable permanent agreement for the Ottoman Empire. Twelve years after Karlowitz, it began the long-term prospect of taking revenge for its defeat at the Battle of Vienna in 1683. First, the army of Turkish Grand Vizier Baltacı Mehmet defeated Peter the Great's Russian Army in the Russo-Turkish War (1710–1711). Then, during the Ottoman–Venetian War (1714–1718), Ottoman Grand Vizier Damat Ali reconquered the Morea from the Venetians. As the guarantor of the Treaty of Karlowitz, the Austrians threatened the Ottoman Empire, which caused it to declare war in April 1716.

The Ottoman Empire, also called the Turkish Empire, was an imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Central Europe, between the early 16th and early 18th centuries.

The Battle of Petrovaradin also known as the Battle of Peterwardein, took place on 5 August 1716 during the Austro-Turkish War when the Ottoman army besieged the Habsburg-controlled fortress of Petrovaradin on the Military Frontier of the Habsburg monarchy. The Ottomans attempted to capture Petrovaradin, the so-called Gibraltar on the Danube, but experienced a great defeat by an army half the size of their own, similar to the defeat they had experienced in 1697 at the Battle of Zenta. Ottoman Grand Vizier Damad Ali Pasha was fatally wounded, while the Ottoman army lost 20,000 men and 250 guns to the Habsburg army led by Field Marshal Prince Eugene of Savoy.

The Habsburg monarchy, also known as Habsburg Empire, or Habsburg Realm, was the collection of empires, kingdoms, duchies, counties and other polities that were ruled by the House of Habsburg. From the 18th century it is also referred to as the Austrian monarchy, the Austrian Empire or the Danubian monarchy.