Count von Hauben was sent to establish a bridgehead west of the Sava for a supply and communication route to Petrovaradin and a liaison to the troops in Zemun.Prince Eugene was informed that the huge Ottoman army of about 140,000 men sent to relieve Belgrade was approaching under the command of Grand Vizier (Hacı) Halil Pasha.Even when 40,000 Crimean Tatars arrived on 12 August, Halil Pasha, still reluctant to fight Eugene's army, chose to gather another war council instead of attacking.However several Ottoman infantry battalions managed to corner the right side of Pálffy's cavalry after it lost its way in the fog this already disrupting the order of war.General Count Claude Florimond de Mercy with the second cavalry line attacked immediately in support of Pálffy, followed by the infantry of Maximilian Adam Graf Starhemberg.After the first hours of fighting, while the sun rose but the intense fog still covered the battlefield, the Ottomans perceived an opening in the center of the Austrian array and attacked in force.The Ottoman 18-gun battery on the Badjina Heights was captured and the remaining troops withdrrw to the camp where the Grand Vizier ordered a full retreat.James Oglethorpe, an aide de camp of the prince, reported that Eugene had a Te Deum performed in the tent of the Grand Vizier on 19 August after taking possession of it.[citation needed] The entire Muslim population together with the remaining Ottoman garrison troops left unhurt taking their basic possessions with them.Habsburg Monarchy obtained at the expense of the Ottoman Empire the Banat of Temesvár which returned to the Kingdom of Hungary, Belgrade with much of central Serbia, Lesser Wallachia (Oltenia), and some other border areas.Belgrade would remain a territory under the domination of the Habsburg Monarchy for over twenty years until new Ottoman–Habsburg rivalries resulted in the city being reconquered by the Ottomans in 1739.
Eugene of Savoy surveying the Battlefield on 16 August 1717