Complex sentence: In November however, the French frigates "Volontaire" and "L'Insurgente" attacked the USS "Retaliation", capturing it--this was the only American vessel to be captured during the entire Quasi War.
Split into simpler sentences: In November however, the French frigates "Volontaire" and "L'Insurgente" attacked the USS "Retaliation", capturing it. This was the only American vessel to be captured during the entire Quasi War.