2 Samuel 18:1

And David numbered the people that [were] with him,.... Which Josephus says d were four thousand; but one would think there should be more by what follows:

and set captains of thousands and captains of hundreds over them; he divided his army into companies, which consisted some of a thousand and others of a hundred; over each of which he set captains, to lead them on, direct, and command them in battle.

d Antiqu. l. 7. c. 10. sect. 1.