'Captain' in the Bible

The Lord will return his bloody deeds upon his own head, because he struck down two men more righteous and honorable than he and killed them with the sword, without my father David knowing: Abner the son of Ner, commander of the army of Israel, and Amasa the son of Jether, commander of the army of Judah.

His servant Zimri, commander of half his chariots, conspired against Elah. Now Elah was in Tirzah, getting drunk in the house of Arza, who was in charge of the [king’s] household in Tirzah.