1803 surrender of the Electorate of Hanover to Napoleonic France
The Convention of Artlenburg or Elbkonvention was the surrender of the Electorate of Hanover to Napoleon's army, signed at Artlenburg on 5 July 1803 by "Oberbefehlshaber" Johann Ludwig von Wallmoden-Gimborn. It disbanded the Electorate of Hanover and instigated its occupation by French troops.
Context.
After Napoleonic troops under lieutenant-general Édouard Adolphe Casimir Joseph Mortier occupied the electorate's capital at Hanover on 4 June 1803, the remaining Hanoverian troops withdrew to the north bank of the Elbe, into the Duchy of Saxe-Lauenburg, but were soon forced to surrender.