Why French vice admirals did not always rank alike

For much of French naval history, vice admiral was the highest permanent grade, while higher status depended on appointment or brevet authority. NATO-equivalent seniority therefore matters more than a direct translation of the title. A French vice admiral might not stand level with a British officer whose title sounded identical. The mismatch could become diplomatically visible at ceremonies, where precedence and seating signaled an officer's recognized standing among allied commanders.