Officials said Christopher Osborne, 26, used his rank to assault the 16-year-old girl at the Danville fire station in January 2021.
At the time of the rape, he was also a part-time police officer in Marmet, according to WCHS.
He was a rookie firefighter with the Charleston Fire Department and was terminated after they were made aware they he faced two counts of second-degree assault stemming from other incidents.
Osborne faces up to 14 years in prison and is required to register as a sex offender.
