 These created confusion and panic among the defenders and caused death and injury in their ranks.Loison then continued his journey, until he was forced to withdrew in the upper Douro by Brigadier Silveira's forces, who he had reorganized, during Napoleon's northern march to the city of Lisbon.For his efforts, Silveira was given a cavalry command, owing to his defense of the bridge, and attributed the title of Count of Amarante and elevated to the status of General.