The term PFC's Superior refers to the rank of a soldier in the United States Army. The two crossword solutions for this term are CORPORAL (8 letters) and CPL (3 letters). CORPORAL is the higher rank of the two, and is abbreviated as CPL. It is the third lowest enlisted rank in the Army, and is typically held by soldiers who have completed basic training and have been assigned to a unit. CPL is the abbreviation for CORPORAL, and is used to refer to the rank in informal settings.