There are various synonyms for the term "full admiral." Some of these include fleet admiral, admiral of the fleet, grand admiral, and admiral general. These titles are all reserved for the most senior officers in the admiralty. A full admiral is typically appointed to lead large-scale naval operations and defends his country's maritime interests. In the United States Navy, a full admiral is equivalent in rank to a general in the Army, Air Force, or Marines. Regardless of the title given, admirals are esteemed naval officers who serve as leaders in maintaining global security and promoting maritime stability.