'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 with me captains of the army and horsemen.

And he spake before his brethren and the army of Samaria, and said, What are these feeble Jews doing? 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 rubbish, seeing they are burned?