Key Facts
- Duration of siege
- ~4 weeks (March 1761)
- Decisive engagement
- Battle of Grünberg, March 21, 1761
- Outcome
- Siege lifted; French retained Kassel
- Later result
- Brunswick captured Kassel in 1762 siege
Strategic Narrative Overview
Brunswick initiated the siege of Kassel in March 1761, pressing the investment for approximately four weeks. The effort unraveled when forces under the Duc de Broglie struck the besieging army at the Battle of Grünberg on March 21, 1761, inflicting heavy casualties on Brunswick's troops. The losses made sustaining the siege untenable, and Brunswick was compelled to withdraw.
01 / The Origins
During the Seven Years' War, Kassel — capital of Hesse-Kassel — fell under French occupation as France prosecuted its campaign in western Germany against Britain's ally Prussia and the Army of Observation under Duke Ferdinand of Brunswick. Control of Kassel was strategically important, and Brunswick sought to reclaim it from the French forces holding the city in early 1761.
03 / The Outcome
With the siege lifted, France retained control of Kassel. Brunswick returned the following year and successfully captured the city in a second Siege of Cassel in 1762, placing it under Allied occupation until the conclusion of the Seven Years' War in 1763, when territorial arrangements were settled by the Treaty of Paris and the Treaty of Hubertusburg.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Duke Ferdinand of Brunswick.
Side B
1 belligerent
Duc de Broglie.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.