'Commander in chief' in the Bible

"About this time tomorrow I'll send you a man from the land of Benjamin, and you are to anoint him as Commander-in-Chief over my people Israel. He'll deliver my people from the control of the Philistines, because I've seen the suffering of my people and because their cry has come up to me."

Samuel took a flask of oil, poured it on Saul's head, kissed him, and said, "The LORD has anointed you Commander-in-Chief over his inheritance, has he not?

but now your kingdom won't be established. The LORD has sought for himself a man after his own heart, and the LORD has appointed him as Commander-in-Chief over his people because you didn't obey that which the LORD commanded you."

When the LORD does for your majesty all the good that he promised concerning you and appoints you Commander-in-Chief over Israel,

David rose and went to the place where Saul was camped. David saw the place where Saul and Abner, his Commander-in-Chief, lay down. Saul was lying down within the encampment, and the army was camped all around him.