Reinforcements adjectives are listed in this post. Each word below can often be found in front of the noun reinforcements in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing REINFORCEMENTS.
additional, adequate, american, ample, british, confederate, considerable
constant, continual, english, federal, few, first, forward
french, fresh, further, german, great, heavy, immediate
important, large, last, military, more, necessary, negative
new, numerous, other, positive, powerful, russian, small
spanish, strong, substantial, successive, such, sufficient
Hope this word list had the adjective used with reinforcements you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.