In the Siege of Hameln or Siege of Hamelin (7 November 1806–22 November 1806), First French Empire forces captured the fortress of Hamelin from its garrison composed of troops from the Kingdom of Prussia. The siege was begun by the VIII Corps under French Marshal Édouard Adolphe Casimir Joseph Mortier. The marshal initially left General of Division Jean-Baptiste Dumonceau in charge of operations.