'Officers' in the Bible

These men were the ones called from the congregation, the leaders of their fathers’ (ancestors’) tribes; they were the heads of thousands [the highest ranking officers] in Israel.”

And the LORD said unto Moses, Gather unto me seventy men of the elders of Israel, whom thou knowest to be the elders of the people, and officers over them; and bring them unto the tabernacle of the congregation, that they may stand there with thee.

In answer, Balaam told them, "Stay here for the night and I'll bring back a message to you, depending on what the LORD says to me." So the officers of Moab stayed with Balaam overnight.

In response, Balak sent more officers higher ranking ones, at that!

And Moses was wroth with the officers of the host, with the captains over thousands, and captains over hundreds, which came from the battle.

And the officers which were over thousands of the host, the captains of thousands, and captains of hundreds, came near unto Moses:

So Moses instructed Eleazar the priest and Nun's son Joshua, and the officers of the ancestral tribes of the Israelis,