Military rank insignias
Rank insignias of U.S. military officers.
admiral
naval officer
admiral, the title and rank of a senior naval officer, often referred to as a flag officer, who commands a fleet or group of ships of a navy or who holds an important naval post on shore. The term is sometimes also applied to the commander of a fleet of merchant vessels or fishing ships. The title of admiral has an ancient lineage. It apparently originated before the 12th century with Muslim Arabs, who combined...