His great-uncle, also named Pierre Vandier and a naval officer (1873-1922), was the inventor of the “convoy doctrine” which reduced the losses caused by submarines during the First World War.

During this time, the air wing aircraft were again employed in Afghanistan in support of the troops of the ISAF (International Security Assistance Force, under the command of NATO).

In the summer of 2007, he took command of frigate Surcouf and took part in Operation Thalatine to rescue hostages aboard the sailing yacht Ponant in the Indian Ocean.

After obtaining the atomic engineering certificate in early 2009, he took up the post of programme management officer in the “Plans” division of the Defence Staff (French: Etat-Major des Armées, acronym: EMA).

Appointed Chief of the Military Cabinet of the Minister of the Armed Forces on 1 September 2018, he was then elevated to the rank and title of vice admiral on 1 January 2020.

He is an auditor of the 65th session of the Centre for Advanced Military Studies (French: Centre des Hautes Etudes Militaires, acronym: CHEM) and of the 68th session of the Institute for Advanced Studies in National Defence (French: Institut des Hautes Etudes de la Défense Nationale, acronym: IHEDN).

His predecessor, Admiral Christophe Prazuck, gave him the Admiralty mark during a ceremony onboard aircraft carrier Charles de Gaulle on 1 September 2020.

The IONS was created in 2008 with the aim of promoting cooperation between the military navies of the states bordering the Indian Ocean and consolidating a common approach to the challenges and responses related to the issues of the area.