The term 'Army Base Nickname' refers to a nickname given to an Army base by its personnel. The nickname is usually derived from the base's location, its history, or its mission. In this crossword, the solution for the term 'Army Base Nickname' is 'SARGE, ' which is a slang term for a sergeant in the United States Army. The term is often used as a nickname for a base, as it is a term of respect and admiration for the rank of sergeant.