'Officer' in the Bible

so the LORD turned them over to domination by King Jabin of Canaan, who reigned in Hazor. Sisera, the commanding officer of his army, lived in Harosheth-haggoyim.

I will draw out Sisera, the commanding officer of Jabin's army, along with his chariots and troops, to the Kishon River, where I will drop him right into your hands.'"

And Gaal the son of Ebed said, Who is Abimelech, and who is Shechem, that we should serve him? is not he the son of Jerubbaal? and Zebul his officer? serve the men of Hamor the father of Shechem: for why should we serve him?