2 Samuel 18:2

Under the hand of Joab, to wit, for his especial conduct and management in the battle: otherwise Joab was the general of all the forces; nor had David yet taken away that power from him, nor was this a time to do it. But such distributions of forces are usual in battles. I will surely go forth with you myself also, that by my presence I may put life and courage into my soldiers; and because it is fit I should run the same hazards with you, which you do for my sake.