Grand Admiral a naval rank in one of the highest in the several European navies that use this system, what system are they using?
Grand admiral Grand admiral is a historic naval rank, the highest rank in the several European navies that used it. It is best known for its use in Germany as "Großadmiral". A comparable rank in other navies is that of fleet admiral.
Marshal (Italy) The Italian military rank of maresciallo (marshal) is classified as a "sub-officer" and is the highest rank of non-commissioned officer in the Italian armed forces, higher than the rank of sergeant but lower than that of ensign/second lieutenant; there are from three to five grades within the rank, according to the different branches of the armed forces. The rank is achieved through merit or attending the "Scuola Allievi Marescialli" (School of Student Marshals). Marshal is an intermediate rank of the armed forces which is currently granted to NCOs with the training and technical competence to carry out specialised executive roles, and to command smaller and technically complex units.