Promoted contre-amiral (rear admiral) in 1854, he served with distinction in the siege of Sebastopol, where he was in command of the French marines (fusiliers-marins).
Dipromosikan contre-amiral (laksamana belakang) pada tahun 1854, ia melayani dengan istimewa di pengepungan Sevastopol, di mana ia berada di komando marinir Prancis (Fusiliers Marins).