Forts adjectives are listed in this post. Each word below can often be found in front of the noun forts in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing FORTS.
american, ancient, british, certain, chinese, coastal, confederate, danish, detached
different, english, erect, federal, few, french, great, important, indian
large, little, lower, many, military, modern, more, new, northern
numerous, old, other, outer, outlying, own, powerful, principal, roman
ruined, several, small, smaller, southern, spanish, stockaded, strong, strongest
such, turkish, various, western, wooden
Hope this word list had the adjective used with forts you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.