army

noun

1. A large, highly organized military force, concerned mainly with ground (rather than air or naval) operations.“The army was sent in to quell the uprising.”
2. The governmental agency in charge of a state's army.“The army opposed the legislature's involvement.”
3. A large group of people working toward the same purpose.“It took an army of accountants to uncover the fraud.”
4. A large group of social animals working toward the same purpose.“Our house is being attacked by an army of ants.”