Léon Gambetta
He was promoted to Rear-Admiral in 1911, and took command of the 2nd Division of the 1st Light Wing, on the armoured cruiser "Léon Gambetta". At the beginning of the First World War, he took part in cruiser operations in the Mediterranean and Adriatic. On 27 April 1915, the "Léon Gambetta" was torpedoed by the Austrian-Hungarian submarine off Cape Santa Maria di Leuca. Senès sank with his vessel.