The Battle of Soltau (German: Schlacht bei Soltau) took place on 28 June 1519 and was the military climax of the Hildesheim Diocesan Feud which lasted from 1519–1523. Some sources describe it as "the last knights' battle" (Die letzte Ritterschlacht). It is also often described as the "last medieval feud". Despite their convincing victory at the Battle of Soltau, the Lüneburg-Hildesheim alliance eventually lost the war against Brunswick and Calenberg, when Emperor Charles V banned both Henry, Duke of Lüneburg, and Prince-Bishop John.