prime location (for offices, housing, etc.); best district (in town); excellent piece of land
first prize; gold medal; blue ribbon
first mate; first officer
first-class carriage (coach)
chief petty officer (IJN); petty officer first class (US Navy)
to commute a death sentence to life imprisonment
first-degree relative; member of one's immediate family
airman second class (JASDF)
private first class (JGSDF)