Siege of Deventer (1578)

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Siege of Deventer (1578)
Part of the Eighty Years' War
Date 3 August – 19 November 1578 Location Deventer, Overijssel Result Deventer captured by the States
Belligerents
States-General of the Netherlands	German garrison under Spanish command
Commanders and leaders
Graaf van Rennenberg Diederik Sonoy	Augustyn Ryck Haurincourt
Strength
Army of Rennenberg: 10 detachments (around 1,300) French army: 1,000	900
Casualties and losses
Unknown	300

The siege of Deventer was a siege of the city of Deventer by States troops under George van Lalaing, count of Rennenberg, from 3 August to 19 November 1578 during the Eighty Years' War. It was besieged in an attempt by the States-General of the Netherlands to better protect the regions of Holland and Utrecht from Spanish plundering. Since 1572 the city had been held by the German Polweiler-regiment for the Spanish Empire on behalf of Don John of Austria. After Lalaing had put into practice a number of pieces of strategic advice from Johan van den Kornput, the city was prepared to negotiate a surrender and on 19 November 1578 handed itself over to States troops.