The ultimate fate of the Polish Legions in Italy was different from that promised by Wybicki's song. Rather than coming back to Poland, they were exploited by the French government to quell uprisings in Italy, Germany and, later, in Haiti where they were decimated by war and disease. Polish national hopes were revived with the outbreak of a Franco-Prussian war (part of the War of the Fourth Coalition) in 1806. Napoleon called Dąbrowski and Wybicki to come back from Italy and help gather support for the French army in Polish-populated parts of Prussia. On 6 November 1806, both generals arrived in Poznań, enthusiastically greeted by locals singing "Poland Is Not Yet Lost". The ensuing Greater Poland Uprising and Napoleon's victory over Russian forces at Friedland led to the creation of a French-controlled Polish puppet state known as the Duchy of Warsaw.