Magne made a career aboard the Charles De Gaulle. On the 5 August 2005, he was promoting from second officer to captain of the aircraft carrier, succeededing capitaine de vaisseau Denis Béraud. As a squadron commander, he directed the naval component of Opération Baliste in 2006. From 2007, he has served in he capacity of Chief of Staff for Maritime and Air Operations [1]. In 2011, he becomes ALFAN commanding the "Force d'action navale" that is to say all the ships of the French Army