The fourth, for the fourth month, was Joab’s brother Asahel, and his son Zebadiah was commander after him. There were 24,000 men in his division.
Jewish Publication Society of America Version (JPS1917) - 1 Chronicles 27:7 >The fourth captain for the fourth month was Asahel the brother of Joab, and Zebadiah his son after him; and in his course were twenty and four thousand.