Battle of Petrovaradin The Battle of Petrovaradin or Battle of Peterwardein was a decisive victory for Austrian forces in the war between Habsburg Monarchy of Austria and the Ottoman Empire ( 1716 – 1718 ) , at Petrovaradin ( then part of Military Frontier , Habsburg Monarchy ; today part of Novi Sad , Vojvodina , Serbia ) . History . In 1716 , Grand Vizier Damat Ali gathered a 160 , 000 strong Ottoman army at Belgrade , at the core of which were 40 , 000 Janissaries , 20 , 000 Sipahi , and 10 , 000 Tatars , together with some renegade Kuruc cavalry . They crossed the Sava at Zemun at the end of July , and moved on the right bank of the Danube towards Sremski Karlovci ( in the Habsburg territory ) . The Tatars , with Moldavians and Kurucs drove into Transylvania , but the Transylvanian forces were no match for the Tatars . The commander of the Austrian forces , Prince Eugene of Savoy , decided to engage the Ottomans at Petrovaradin . He had arranged for the construction of a fortified encampment within the fortress there , and set the 83 , 300 strong Imperial army on the march from their quarters in Futog . There was an 8 , 000 man garrison in the fortress consisting primarily of Serbs . In the Austrian army served Croatian and Hungarian infantry and cavalry regiments ( approx . 42 , 000 men ) and Serbian border soldiers in the Vojvodina . On August 2 , the first skirmish between the Imperial vanguard and Ottoman horsemen occurred . By the next day , the Grand Vizier had already reached Petrovaradin and immediately dispatched 30 , 000 Janissaries against the imperial positions . They dug sap s and began to bombard the fortress . The core of the Imperial army only crossed the Danube on the night of August 5 by two pontoon bridges after which they encamped . The battle and its effects . At 7 o ' clock on the morning of August 5 , Prince Eugene began the Austrian offensive . While the right flank under Prince Alexander von Württemberg stormed an Ottoman artillery battery , the Imperials rode into trouble in the center : deployment through the small gate of the fortress proceeded slowly . The Janissaries went on the counter - attack immediately and forced the imperial army back into the fortress . Prince Eugene sealed off the central incursion with additional troops and sent his cavalry into the Ottoman flanks , by which means they were encircled . The Grand Vizier could not manage to break the encirclement with his Sipahis nor could he regroup his troops . The Tatars even pulled back without engaging in combat . After the defeated Ottomans were wiped out , Prince Eugene personally led his troops against the Grand Vizier ' s encampment . Supported by the guns of six frigates of the Danube fleet , the battle had been won by two o ' clock , with the Grand Vizier himself among the slain . Barely 50 , 000 Ottomans returned to Belgrade . Soon , from Constantinople came a messenger from the Sultan with order of execution of Damat Ali . He is buried at the Belgrade Fortress , Kalemegdan , in tomb known as " Damad Ali Pašino Turbe " . After the war , a church commemorating this event was built on Tekije , on the hill over battlefield , and is dedicated to Our Lady of Tekije , also known as " Snowy Mary " . The church is special , because it has both Catholic and Orthodox altars and both Christian denominations use it . The site is place of pilgrimage on every August 5 . After Petrovaradin , Prince Eugene turned against Timişoara ( in Ottoman territory ) and captured it despite great resistance and desperate attempts by the Ottomans to relieve the town . Eventually , they admitted defeat and signed a treaty with Austria and her ally Venice .