'Army' in the Bible

Then I came to the governors beyond the river, and gave them the king's letters. Now the king had sent captains of the army and horsemen with me.

And he spake before his brethren and the army of Samaria, and said, What do these feeble Jews? will they fortify themselves? will they sacrifice? will they make an end in a day? will they revive the stones out of the heaps of the rubbish which are burned?