sergeant first class

English Thesaurus

1. a sergeant in the Army above the rank of staff sergeant and below master sergeant (noun.person)

hypernym	:	sergeant,
definition	:	any of several noncommissioned officer ranks in the Army or Air Force or Marines ranking above a corporal (noun.person)

hyponym	:	orderly sergeant,
definition	:	the first sergeant of a company; duties formerly included the conveyance of orders (noun.person)