'Captains' 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 from that time forth the half of my servants wrought in the work, and the other half of them held the spears, and the shields, and the bows, and the corslets; and the captains were behind all the house of Judah.