 He was first assigned to serve on nuclear attack submarines and nuclear ballistic missile submarines; in 1989, he obtained his Atomic brevet.Rogel assumed commandment of the nuclear attack submarine "Casabianca" and "Saphir" from 1990 to 1992.He became the drill officer in charge of executive instructions and tactical maneuvering at the corps of the Submarine Squadron of the Mediterranean, with the particular responsibility of training and qualifying competent boat commandants and crew members, capable of fitting service on nuclear attack submarines, in addition to the placement effects of materials and tactical submarine evolutions.