Entered the École navale on October 1911, enseigne de vaisseau in October 1914, he served on board Jeanne-d'Arc in the northern squadron, then in April 1915, in the Mediterranean where he participated to operations in the Dardanelles. In September 1915, assigned to the intelligence service established in an island in the Levantine Mediterranean, he organized a network covering the entire Levant. He continued to lead this mission as of August 1916, as second in command of avisoLaborieux, then at Kastelórizo on the coast of Anatolia. Second in command of submarinein September 1917, he participated in campaigns in the Adriatic until the end of the war. On January 1919, he was sent to Rijeka to serve in the intelligence service, then in Egypt and Lebanon. Lieutenant de Vaisseau in June 1919, he commanded the submarine Le Verrier in the Mediterranean, and wrote studies of analysis on the role of torpilleurs during the Battle of Jutland and the employment of tactical submarines engaged in chases by groups in which he advocated the anticipation of ideas which were later realized by Admiral Donitz during the Second World War. Assigned in June 1922 to the État-Major général de la marine, he launched the construction of the. Apprentice at École de guerre navale, he commanded in 1925, the submarine in the Mediterranean. Capitaine de corvette in January 1927, he was assigned in the previous November to the cabinet of Georges Leygues, minister of the Navy, where he particularly worked towards the specific enacting of the organic decree of April 22, 1927 which reorganized the navy. He was appointed to command the destroyer in the Mediterranean in 1929, Capitaine de frigate in April 1930, he was tasked to manage and run the application school of the enseignes de vaisseau embarked on board the 1st Light Division which replaced in provision the Jeanne-d'Arc and conducted accordingly a long campaign on the African coasts, Antilles and the Mediterranean. He then commanded a squadron of large destroyers comprising and in the Mediterranean. Director of the center of studies and second in command of the École navale at Brest in 1933, he served then in the cabinet of François Piétri, minister of the Navy , then commanded the cruiser Émile-Bertin in squadron in the Atlantic. Capitaine de Vaisseau in October 1936, he received in October 1937 the command of the Jean-d'Arc and the application school of the enseignes de vaisseau with whom he conducted a tour around the world and a second campaign in the Atlantic and the Pacific. He exercised the functions of military governor of Polynesia. He was accordingly assigned to studies section of the État-Major general. In anticipation of the war which was expected, he was sent to London to coordinate future operations with the Royal Navy. He held his own views regarding the evacuation at Dunkirk or by Operation Catapult. Second chief in command of general headquarter staff of maritime forces in October 1939, he assumed with Admirals François Darlan, Maurice Le Luc and Négadelle, the reception of various inbound convoys.
At the service of Vichy
At Vichy, the counter-admiral Auphan was part of the tenant groups which harbored a political view of attentisme. Designated as chief of the headquarter staff of maritime forces on August 1941, he maintained contact with the American diplomatic representation to Vichy by transmitting various couriers. State Secretary of the Navy as of April 1942, he opposed the demanding German requirements related to materials of merchant tonnage. Along with French Army general Maxime Weygand, he assumed a staunch positions of opposition to the politics of collaboration at the corps of the government. A partisan of a suspension of combat between French and Americans during the Anglo-American disembarking of November 8, 1942 in North Africa, he opposed those who wanted to continue to mount combat along the Germans. On November 11, 1942, chef d'état major, counter-admiral Auphan ordered the two admirals of Toulon to:
oppose, without shedding blood, the entry of foreign troops in the establishments, the aerial bases, and naval auxiliaries;
oppose similarly the entry of foreign troops on board of the fleet's naval vessels; by local negotiations, effort one self to arrive to a mutual accord;
On August 14, 1946, he was judged and condemned in absentia to forced labor, degraded national status, and confiscation of his properties. On July 19 and 20, 1955, a second hearing condemned him to only five years in prison with probationary measure and five years of degraded national status. In 1956, the State Council gave him back his rank and rights for pension. Auphan dedicated his life later to writings: a close figure to général Maxime Weygand or colonel Remy, he published his souvenirs, and defended his views, remaining loyal to the memories of Marshal Philippe Pétain. The Counter-admiral Auphan was a member of the Association of Catholic writers until his death, in 1982.
Publications
La Lutte pour la vie 1940–1942 ou La Marine au service des Français
Mensonges et vérité – Essai sur la France
Les grimaces de l'histoire et l'histoire de mes trahisons
Les échéances de l'histoire ou l'éclatement des empires coloniaux de l'Occident
Le Drame de la désunion européenne
La Marine dans l'histoire de France
La Marine française dans la Seconde Guerre mondiale
