Suleiman I's campaign of 1529

Suleiman I's campaign of 1529 was launched by the Ottoman Empire to take the Austrian capital Vienna and thereby strike a decisive blow, allowing the Ottomans to consolidate their hold on Hungary. This was in response to Ferdinand I's daring assault on Ottoman Hungary.

March
Suleiman's march to Vienna was also an attempt to assist his vassal, John Szapolyai who claimed the throne of Hungary. Suleiman sent his army of 120,000 strong north on the 10 May 1529. His campaign was marked by speedy success, on September 8 Buda surrendered to the Ottomans and John Szapolyai was installed as King of Hungary. Suleiman then went further taking Esztergom, Tata, Komárom and Győr so that much of Ferdinand I's gains the previous two years were lost. On 27 September, Suleiman reached Vienna.

Aftermath
The arrival of the Sultan's massive host in Central Europe caused much panic across Europe - Martin Luther, who had believed that the Ottomans were God's punishment against the sins of Christians modified his views and wrote the book the War with the Turks in 1529 urging that "the scourge of God" should be fought with great vigour. However, when Suleiman began besieging Vienna it would prove to be his first and most decisive blunder.