Hungarian campaign of 1527–1528
Following the Battle of Mohács, the Ottomans were forced to withdraw as events elsewhere in their now massive Empire required the Sultan's attention.[1] Seizing upon their absence, Ferdinand I attempted to enforce his claim as King of Hungary.In 1527 he drove back the Ottoman vassal John Zápolya and captured Buda, Győr, Komárom, Esztergom, and Székesfehérvár by 1528.The civil war was preceded by Louis II of Hungary died and the Turks besieged Buda.Many of the recently captured forts surrendered without resistance, greatly speeding up the advance.