The term 'Pentagon Personnel' refers to the military personnel who work in the Pentagon, the headquarters of the United States Department of Defense. The two crossword solutions for this term are 'BRASS' and 'Topbrass'. 'BRASS' is a term used to refer to high-ranking military officers, while 'Topbrass' is a term used to refer to the highest-ranking military officers. Both terms refer to the senior members of the military who work in the Pentagon.