Key Facts
- Duration
- October 31 – December 20, 1530
- Ottoman garrison size
- 3,000 Ottoman soldiers + 800 Serbs and Turks
- Main assault date
- 10 November 1530
- Habsburg withdrawal
- 22 November 1530
- Outcome
- Habsburg siege failed; defenders held Buda
Strategic Narrative Overview
Ferdinand's forces besieged Buda from October 31, launching a major three-pronged assault on November 10 from the north-east, east, and Gellért Hill. An initial breakthrough from the south-west was repelled when Alvise Gritti's garrison deployed its reserves effectively. News of advancing Ottoman relief troops on November 20 prompted the Habsburg commander Wilhelm von Roggendorf to cancel the offensive and begin withdrawal two days later.
01 / The Origins
Following Suleiman the Magnificent's capture of Buda in 1529, the Ottoman sultan installed John Zápolya as a vassal ruler and left a garrison to defend the city. Ferdinand I of Habsburg, who claimed the Kingdom of Hungary in its entirety, viewed Zápolya's weak hold on Buda as an opportunity to seize the capital and assert his authority over the contested Hungarian throne.
03 / The Outcome
The Habsburg army retreated to Vienna in apparent disorder on November 22, 1530. Sick and wounded soldiers left behind were captured by forces loyal to John Zápolya and massacred. The failed siege left Buda firmly under Ottoman-backed control and underscored the difficulty Ferdinand faced in dislodging the Ottomans from central Hungary.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Wilhelm von Roggendorf.
Side B
1 belligerent
Alvise (Ludovico) Gritti, John Zápolya.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.