'Princes' in the Bible

'And I take the heads of your tribes, men, wise and known, and I appoint them heads over you, princes of thousands, and princes of hundreds, and princes of fifties, and princes of tens, and authorities, for your tribes.

and it hath come to pass as the authorities finish to speak unto the people, that they have appointed princes of the hosts at the head of the people.

Mine arrows will I make drunk with blood, And my sword shall devour flesh; I will make them drunk with the blood of the slain and of the captives, With the head of the princes of the enemy.