After the victory at Petrovaradin on 5 August 1716, the Austrian army led by Prince Eugene of Savoy decided to conquer Timișoara. The Ottoman military, the kuruc and the Turkish civilian population were forced to leave the city after a 48-day siege marked by repeated bombings that destroyed much of the city's buildings. After the Treaty of Passarowitz (1718), the Banat of Temeswar became the province of the Habsburg Monarchy and was proclaimed "possession of the Crown" with a military administration which ruled Timișoara until 1751 when it was replaced by a civil one.