After the defeat of France at the Battle of Sedan during the Franco - Prussian War he left France hastily on 4 September 1870 .
After the defeat of France at the Battle of Sedan during the Franco - Prussian War he joined Napoleon III in exile .
After the defeat of France at the Battle of Sedan during the Franco - Prussian War he left France hastily on 4 September 1870 and joined Napoleon III in exile .