'Army' in the Bible

Then I came to the governors of the provinces beyond the [Euphrates] River and gave them the king’s letters. Now the king had sent officers of the army and horsemen with me.

He spoke before his brothers and the army of Samaria, “What are these feeble Jews doing? Can they restore it for themselves? Can they offer sacrifices? Can they finish in a day? Can they revive the stones from the heaps of dust and rubbish, even the ones that have been burned?”