2 Samuel 8:16

Zeruiah's son Joab served in charge of the army, Ahilud's son Jehoshaphat was his personal archivist,

1 Kings 4:3

Shisha's sons Elihoreph and Ahijah were his secretaries, Ahilud's son Jehoshaphat was recorder,

1 Chronicles 11:6

David had announced, "Whoever first attacks the Jebusites will be appointed chief and commander." When Zeruiah's son Joab went up first, he became chief.

2 Samuel 19:13

Then ask Amasa, "Aren't you my own flesh and blood? So may God deal with me, no matter how severely, if from this day forward you don't take Joab's place as commander of my army.'

2 Samuel 20:23-24

Joab commanded the entire army of Israel, Jehoiada's son Benaiah commanded the special forces and mercenaries,

1 Chronicles 18:15-17

Zeruiah's son Joab served in charge of the army, Ahilud's son Jehoshaphat was his personal archivist,

Treasury of Scripture Knowledge

Summary

2 Samuel 8:16

And Joab the son of Zeruiah was over the host; and Jehoshaphat the son of Ahilud was recorder;

Jehoshaphat

1 Kings 4:3

General references

2 Samuel 20:7

Bible References

Jehoshaphat

Shisha's sons Elihoreph and Ahijah were his secretaries, Ahilud's son Jehoshaphat was recorder,

General references

So Joab's men, the special forces and mercenaries, and all of David's elite forces left Jerusalem in pursuit of Bichri's son Sheba.