2 Samuel 8:16
16 bJoab the son of Zeruiah was over the army, and cJehoshaphat the son of Ahilud was recorder,
1 Kings 11:15
15 For pwhen David was in Edom, and Joab the commander of the army went up to bury the slain, he struck down every male in Edom
1 Chronicles 11:6
6 David said, “Whoever strikes the Jebusites first shall be chief and commander.” And Joab the son of Zeruiah went up first, so he became chief.