[3] Crussol joined the Cavalry and, after a year spent in the service of Russia, took part in the Balkans campaign.

Following his vote in favour of the Pritchard indemnity, he fought a duel with the Marquis de Calvière, a fervent legitimist, son of a prefect and former deputy.

[1] Although he did not support the policies of Napoleon III, he was elected during the Second Empire to the Legislative Body on 29 February 1852 as an independent candidate in Gard's 2nd constituency (Uzès).

He was a member of the budget committee and spoke only once during the first session (1852) to oppose the project to create a Ministry of General Police.

Between 1847 and 1849, he used part of his wife's fortune to have the Château de Bonnelles built in the Louis XIII style by the architects Joseph-Antoine Froelicher and Clément Parent, on a vast hunting estate inherited from his father.