Then Joab stopped pursuing Abner and assembled the whole army. Besides Asahel, nineteen of David's men were found missing.
NIV
Joab returned from pursuing Abner, and when he had gathered all the people together, there were missing of David's servants nineteen men besides Asahel.
AMP
And Joab returned from following Abner: and when he had gathered all the people together, there lacked of David's servants nineteen men and Asahel.
KJV