On 25 April 1849, ten thousand French soldiers led by General Charles Oudinot landed at Civita Vecchia to fight Roman revolutionaries. On 3 July 1849, the power of pope Pius IX was restored in Rome. 

Image: Assalto delle truppe francesci a Roma nel 1849, 1860, by Melchiorre Fontana. This image is part of the public domain and is available on Wikimedia Commons.

Additional Reading

Banti, Alberto Mario. Il Risorgimento italiano. Editori Laterza, 2013.